Chapter 1: Ongoing pounding
The late afternoon sun sliced through the grimy skylights of Leo’s Garage, casting long, distorted shadows across the concrete floor. The air hung thick with the familiar reek of motor oil, hot metal, and rubber – a scent Leo usually found comforting, grounding. Today, it felt charged, suffocating. The usual symphony of whining drills and clanging wrenches had faded to a sparse, distant rhythm; most of the crew had clocked out, leaving only Pete wrestling with a stubborn exhaust manifold on a lift across the bay, and Mikey meticulously wiping down tools near the office door.
Gerald’s sleek, black sedan sat parked near the back wall, away from the main bays. Spotless when it arrived for its pre-wedding detailing, it now seemed… alive. Unsettled. It hadn’t moved an inch under its own power, yet the entire chassis trembled on its suspension. A low, rhythmic thump-thump-thump resonated from within, barely audible over the distant radio playing classic rock. The sound wasn’t mechanical. It was primal. Insistent.
The windows, meticulously cleaned by Leo just an hour ago, were now completely opaque. Fogged into a deep, steamy white, clinging to the glass like breath on a winter pane. No glimpse of the interior remained. Just that thick, obscuring condensation that pulsed subtly, mirroring the unseen tempo inside.
"Shit," Pete grunted, giving the exhaust pipe a frustrated kick. He paused, wiping sweat from his brow with a greasy forearm. His eyes flickered towards Gerald’s car. "The fuck’s Leo doing in there? Polishing the leather with a jackhammer?" He snickered, a rough sound in the cavernous space.
Mikey looked up from his rag. "Probably explaining the fucking brake pads to Sarah again. Gerald’s clueless, man. Asked me last week if synthetic oil was vegan." He shook his head, chuckling. "Sarah just nods and smiles. Sweet kid. Too sweet for that idiot."
The black sedan gave a particularly violent lurch. The front end dipped sharply, then rebounded, the springs groaning under the strain. It rocked forward and back, forward and back, with a relentless, driving cadence. The thump-thump-thump intensified for a frantic few seconds, accompanied by a muffled, high-pitched sound – a gasp? A cry? – swallowed instantly by the car’s sealed interior and the garage’s ambient noise.
"Christ," Pete muttered, squinting. "He better not scratch Gerald’s baby. Bridegroom’ll have his nuts for paperweights if he finds a dent." He leaned back under the car he was working on, the clang of his wrench momentarily drowning out the car’s restless rhythm.
Mikey watched the sedan, a slight frown creasing his forehead. The rocking was… compulsive. Unnerving. He saw condensation trickle down the inside of the rear windshield, leaving a wet streak in the thick fog. The car shuddered again, a sustained, forceful movement that made the tires shift minutely on the concrete. He swore he heard a low, guttural moan vibrate through the metal shell, but it could have been a distant air compressor kicking in.
"Maybe she doesn't get the air conditioning?" Mikey suggested lamely, trying to dismiss the strange tension coiling in his gut. The car looked like it was breathing hard. Panting.
Pete snorted. "In this heat? Dressed like that? Saw her when she came in. Pretty little sundress. White. Looked like a fucking angel." He paused, wiping his hands again. "Bet Leo’s sweating buckets in there. Explaining torque specs." His laugh was harsh.
Inside the sealed, fogged womb of the car, unseen, unheard by the oblivious men, a tempest raged. The leather upholstery creaked under impossible stress. The rhythmic pounding against the driver's seat back intensified, grew frantic, then slammed to a sudden, jarring halt. The car froze mid-rock, trembling violently like a spent engine. A long, ragged, muffled cry seemed to seep from the very seams of the doors, abruptly choked off. Silence, thick and heavy, pressed against the fogged glass.
For five heartbeats, the sedan was utterly still.
Then, the rocking started again. Slower this time. Softer. A deep, rolling motion. Less frantic pounding, more like a persistent, grinding undulation. The fog seemed to glow faintly in the angled sunlight, swirling with unseen currents of heat and breath. Another low, indistinct murmur, deep and satisfied, might have been Leo’s voice, or just the settling of hot metal.
"Taking his sweet fucking time," Pete grumbled, the exhaust pipe finally freeing with a screech. He slid out from under the car. "Hey, Leo! You done polishing the client’s knob in there, or what? I need the impact driver!"
The slow rocking inside the black sedan paused. There was no answer. The fog remained impenetrable. After a beat, the gentle, rolling motion resumed, unhurried, possessive. Ignoring the world outside its steamy shell.
Mikey finally looked away, feeling vaguely unsettled. He focused intensely on wiping a wrench that was already clean. The rhythmic creak of the suspension, the faint, wet slide of unseen friction vibrating through the chassis, the absolute privacy promised by that thick, white fog… it felt wrong. Intrusive just to witness it, even without understanding exactly what he was witnessing. He didn’t want to know.
"Ah, leave him," Mikey said, his voice tighter than usual. "Probably showing her the… uh… custom sound system. Real thorough-like." He couldn’t meet Pete’s eyes.
Pete shrugged, grabbing a beer from a cooler near his toolbox. "Fine. More overtime for me, then." He popped the cap and took a long swig, his gaze drifting back to the gently undulating sedan. "Hope Gerald appreciates the extra fucking shine Leo’s putting on his ride." He took another gulp, the sound loud in the sudden quiet as the radio switched songs. Only the persistent, rhythmic groan of Gerald’s car filled the space. Creak… slide… creak… slide… A relentless, muffled heartbeat.
The sun dipped lower, a final golden beam catching the droplets of condensation finally running freely down the outside of the car’s windows, tracking through the grime like slow, dirty tears. The rocking slowed further, becoming almost imperceptible. Then, stillness. Utter, profound stillness. The engine hadn't run, but the silence felt like a motor cooling, ticking softly as metal contracted. The fog inside the windows began to thin at the very edges, just enough to hint at shadowed shapes within, inseparable, exhausted. The air in the garage hung heavy, thick with oil, sweat, and the lingering, unspoken musk of something raw and desperate that had finally, violently, spent itself.
The stillness didn't last. Inside the fogged tomb of Gerald’s sedan, unseen forces stirred again. A sharp, muffled gasp vibrated through the metal frame, followed instantly by a frantic scrabbling sound against leather – fingernails, perhaps, clawing for purchase. The car jerked violently sideways, its tires squealing faintly against the oil-stained concrete. The front passenger door handle rattled wildly as if someone inside was desperately trying to find it blind.
"Jesus H. Christ!" Pete barked, nearly dropping his beer bottle. He stared, wide-eyed, as the sedan rocked onto its side tires, threatening to tip before crashing back down with a heavy thud that echoed in the cavernous bay. "The fuck is wrong with that car? Leo, you alright in there? Sounds like you're wrestling a goddamn bear!"
Mikey had frozen, rag suspended mid-wipe. His knuckles were white around the wrench. That wasn't explaining brake pads. That wasn't anything normal. The fog on the windows seemed thicker, wetter, pulsing with frantic heat. He saw a distinct smear streak down the rear window, wide and frantic, like a palm had slammed against the glass from the inside. "Maybe… maybe Sarah got locked in?" he offered weakly, his voice tight. "Panicking?"
Pete snorted, though his eyes never left the shuddering vehicle. "Locked in a brand-new Benz? Doubt it. Probably just Leo demonstrating… uh… emergency braking. Real enthusiastic-like." He took another swig of beer, trying to project nonchalance, but his gaze was fixed. The car was moving. Not driving. Convulsing. It bucked forward, the hood dipping sharply, then slammed back onto its suspension with a groan of stressed metal. A low, rhythmic keening sound, high-pitched and desperate, bled through the sealed doors for a terrifying second before being swallowed again.
"Emergency braking my ass," Mikey muttered under his breath, unable to look away. The fog was swirling now, agitated, revealing fleeting glimpses of dark shapes pressed hard against the glass – a curve of a shoulder? The arch of a back? Gone before he could be sure. The car settled into a new rhythm, faster, more urgent than before. Not rocking. Pounding. A relentless, piston-like thudding against the driver's seat back, shaking the entire chassis. Thump-thump-thump-thump. The suspension protested with sharp metallic creaks on each downward thrust.
"Goddamn detailing session," Pete grumbled, louder now, trying to drown out the unsettling sounds. He slammed his wrench onto his toolbox, the clang echoing. "Leo! Wrap it the fuck up! Some of us got actual work to finish!" He kicked a stray lug nut, sending it skittering across the floor towards the trembling sedan.
The pounding intensified. ThumpthumpthumpTHUMP. It reached a frantic, unsustainable peak. The car seemed to freeze, vibrating like a plucked guitar string. Then, a sound ripped through the garage – a raw, guttural roar muffled by steel and glass, primal and triumphant. Simultaneously, a sharp, choked cry pierced the air, high and shattered, instantly cut off. The sedan shuddered violently, a final, massive tremor running through it from bumper to bumper. The fogged windows bloomed with fresh condensation, thick and opaque as milk.
Silence crashed down, heavier than before. Profound. Exhausted. The only sound was Pete’s harsh breathing and the distant hum of the garage fridge. Even the radio seemed muted.
Mikey finally tore his eyes away, focusing intently on a nonexistent spot of grease on his pristine wrench. His face felt hot. He didn’t want to think about what that roar meant. Or that choked cry. Or the sheer, violent force transmitted through tons of German engineering. He definitely didn’t want to think about Gerald’s oblivious face.
Pete wiped his mouth with the back of his hand, his earlier bravado replaced by a wary confusion. "Fuckin' A," he breathed, staring at the utterly still, utterly obscured car. The condensation was already starting to bead and run in thick rivulets down the windows, carving paths through the grime. "Hope he didn't break the damn seat."
Inside the steamy cocoon, unseen, unheard, a storm had raged and spent itself… only to gather fury and break again moments later. And again. Each climax ripped through the confined space, shaking the car with its violence – a muffled shout, a bitten-off scream, the frantic scrabbling of limbs, the wet slap of flesh impacting leather, the deep, rhythmic groans of the suspension pushed to its limit. Orgasm after orgasm tore through the occupants, a relentless cycle of tension and shattering release that Pete and Mikey witnessed only as inexplicable tremors, sudden silences, and the deepening, swirling fog on the glass. They saw the car jerk and shudder like a dying animal. They heard the muffled chaos. They felt the thick, charged air pressing in.
They had no fucking clue. Not a single, solitary clue about the sheer, raw, desperate amount of pleasure and pain being wrung out within arm's reach. The sweat-slicked skin, the tangled limbs, the bitten lips drawing blood, the choked sobs lost against a sweat-dampened neck, the brutal, possessive thrusts driving deep, the fingers digging bruises into soft flesh, the whispered filth swallowed by gasps, the blinding white heat detonating over and over again inside bodies pushed far beyond reason – all of it contained, hidden, vibrating silently within Gerald’s spotless black sedan. The mechanics saw a car acting weird. They breathed air thick with the musk of something they couldn't name. They heard sounds that made their skin prickle. They witnessed the aftermath of ecstasy they couldn't comprehend, dripping down the windows like dirty tears.
The late afternoon sun cast long, dusty shadows across the oil-stained concrete floor of Leo’s Garage. The air hung thick with the reek of motor oil, hot metal, and something else… something cloying and organic the mechanics couldn't quite place. Gerald’s sleek black sedan, parked near the grimy back wall, stood as a trembling monument to hidden sin. Its windows, once clear, were now completely obscured by a thick, milky condensation that pulsed and ran in rivulets like tears. The car rocked, not with the idle bounce of suspension, but with a deep, relentless, piston-driven rhythm. Thump-thump-thump. The chassis groaned. The leather upholstery inside screamed silently under stress.
Pete slammed his wrench onto the exhaust manifold he was wrestling, the clang echoing sharply. "Fuck's sake, Leo! You rebuilding the damn transmission in there? Gerald's gonna have kittens!" He wiped greasy sweat from his forehead, squinting at the shuddering vehicle. The rhythm hitched, intensified to a frantic pounding – thumpthumpthumpTHUMP – then stopped dead. A muffled, guttural roar vibrated through the metal, immediately swallowed by a choked, high-pitched gasp. The car shuddered violently, a final massive tremor running through it. Silence slammed down, heavy and thick, broken only by Pete’s harsh breathing and the distant hum of the garage fridge. Mikey stared, wide-eyed, at the fresh condensation blooming wet and opaque on the windows.
Inside, the air was a suffocating soup of sweat, sex, spilled perfume, and leather conditioner. Heat radiated off their bodies like furnaces. Sarah’s small frame was crushed against the cool, fogged driver’s side window, her cheek pressed to the wet glass. Her white sundress was rucked up over her hips, a crumpled mess of damp cotton. It was soaked through between her legs, dark with sweat and slick arousal. Her bare thighs trembled violently, muscles jumping with the aftershocks of the brutal climax Leo had just ripped from her. Her green eyes were glazed, unfocused, staring sightlessly at the opaque whiteness inches from her face. A thin trickle of saliva escaped the corner of her slack mouth, mingling with the condensation. Her engagement ring, a modest diamond, winked dully under the dim light filtering through the fog.
Behind her, pinning her against the door and the steering wheel, was Leo. His thick mechanic’s forearms were braced on either side of her, muscles corded and slick with sweat, grease still stubbornly embedded under his short nails. His t-shirt was shoved up under his armpits, revealing the hard planes of his sweat-sheened abdomen. His jeans and boxers were tangled around his powerful thighs, bunched just below his ass. He was buried balls-deep inside her, his thick cock a rigid, pulsing column stretching her impossibly wide. He hadn’t pulled out after his own explosive finish. He stayed, lodged deep, his hips grinding minutely against her ass, feeling the frantic, involuntary flutters of her inner walls milking his softening, but still massive, length. His breath came in ragged, satisfied gusts against the sweat-damp nape of her neck. His own sweat dripped from his jawline onto her bare shoulder, tracing a path down her spine.
The smell was overpowering: the metallic tang of sex, the salt of sweat, the underlying fug of old car and Leo’s own musky scent, mixed with the faint, floral ghost of Sarah’s perfume. The leather seat beneath them was dark and slick, a mixture of their fluids. Sarah’s small hands were braced weakly against the fogged window, her fingers leaving smeared trails in the condensation. Her body was a map of possession – the angry red bloom of a bite mark on her shoulder, the darkening imprints of Leo’s fingers digging into the soft flesh of her hips, the raw chafing on the insides of her thighs.
Leo shifted his weight, a low groan rumbling in his chest. The movement made his cock, still semi-hard and thick inside her, drag against her oversensitive flesh. Sarah whimpered, a thin, broken sound muffled by the glass. It wasn’t a sound of protest, but of sheer, overwhelmed sensation. Leo felt it vibrate through her back into his chest. He pushed his hips forward, not pulling out, just grinding deeper, feeling the hot, silken clench of her around him. His hand slid down from her hip, fingers finding the swollen, slippery nub between her legs. She jerked violently, a choked sob escaping her as he rubbed rough, demanding circles. "N-no... Leo... c-can't..." The words were a breathless whimper, lost in the steam.
He ignored her. His other hand snaked up under the rucked fabric of her dress, finding her small breast. He palmed it roughly, his calloused thumb rasping over her hard nipple, pinching just shy of pain. He lowered his head, biting the curve where her neck met her shoulder, not gently. She cried out, her back arching, pushing her ass harder against his groin, forcing his cock impossibly deeper. He felt her inner muscles spasm wildly around him again, the beginning of another brutal climax wrenching through her unprepared body. Her legs kicked feebly against the car door. He kept rubbing her clit, relentless, his own cock swelling back to full, rigid life inside her molten heat, fueled by her involuntary spasms and choked cries.
Outside, Pete spat on the floor. "Gonna grab another beer. Want one?" Mikey just shook his head, his gaze flicking nervously back to the sedan. It had started rocking again. A slow, deep, rolling motion this time. Less frantic, but somehow more… deliberate. More possessive. The fog on the windows swirled with the unseen movement within. Pete shrugged, heading towards the office fridge. Mikey watched the car, the rhythmic creak of its suspension the only sound above the distant radio. The front passenger door handle rattled faintly, as if brushed by a stray, trembling limb. He looked away quickly, the heavy, unnamable scent in the air suddenly making it hard to breathe. The dirty tear-tracks on the windows seemed to multiply, dripping slowly onto the immaculate black paint.
The dirty tear-tracks on the windows seemed to multiply, dripping slowly onto the immaculate black paint. Inside the suffocating heat, Sarah’s body was a trembling wreck pinned against the fogged glass. Leo’s thick cock, still buried deep inside her pulsing cunt, was already hardening again, fueled by the frantic clenching of her muscles around him. His calloused thumb ground relentless circles against her swollen clit, the rough friction sending jagged bolts of sensation through her oversensitive nerves.
“Fuck… Leo… stop… please…” Sarah gasped, the plea dissolving into a choked whimper as his thumb pressed harder. Her hips jerked involuntarily, fucking herself back onto him, her body betraying her words. The raw ache between her legs was a molten counterpoint to the sharp pleasure radiating from his touch. Her engagement ring scraped against the condensation-slick window.
“Stop?” Leo’s voice was a low growl against her sweat-slicked neck. He bit down, not gently, on the tender flesh where her shoulder met her neck, tasting salt and her perfume. His hips snapped forward, driving his cock impossibly deeper, stretching her wide open. “You don’t want me to stop, princess. Your tight little cunt’s sucking me back in.” He pinched her nipple hard through the thin cotton of her ruined sundress, twisting it. “Tell me you want it.”
A ragged sob tore from Sarah’s throat. Her head thumped weakly against the glass. “Want it…” she breathed, the words thick with shame and desperate need. “Want your cock… please…”
“Louder.” His hand slid down from her breast, fingers digging possessively into the soft flesh of her hip, holding her steady as he pulled his hips back slowly, dragging his thick shaft almost entirely out of her dripping heat. The sudden emptiness was agony. She whimpered, pushing her ass back, trying to recapture him. He chuckled darkly, a rumble she felt against her spine. “Beg for it, Sarah. Beg for your fiancé’s best friend to fuck you raw in his car.”
Outside, Pete slammed his empty beer bottle onto the toolbox lid. The sharp crack echoed. “Fuck this,” he grumbled, wiping grease from his hands onto his already filthy coveralls. “Leo’s either detailing that leather with his dick or he’s fallen asleep. Either way, I’m clocking out.” He grabbed his keys from the pegboard. “Mikey? You staying?”
Mikey jumped, startled. He’d been staring fixedly at the wrench in his hand, trying to ignore the low, rhythmic groans emanating from the sedan’s suspension. The car was rocking again, that same deep, persistent undulation. The fog seemed thicker, wetter. He cleared his throat. “Nah. Not much else to do tonight. Gerald’s car’s… uh… occupied.” He couldn’t bring himself to look directly at the vehicle. The air felt thick, charged. He could almost smell the sex, a musky, primal scent cutting through the oil and rubber. It made his skin prickle.
“Occupied my ass,” Pete snorted, heading for the side door. “Probably jerking off to pictures of Sarah. Dude’s obsessed. Creepy.” He pushed the heavy metal door open. Cool evening air rushed in, a brief relief before the door slammed shut behind him with a final clang. Mikey hesitated. The garage felt suddenly cavernous, silent except for the hum of the fridge and the persistent, wet-sounding creak… slide… creak… slide… coming from Gerald’s car. He took a step towards it, curiosity warring with a deep sense of wrongness. He could knock. Just check if everything was okay. Sarah seemed sweet. Vulnerable.
Inside the car, Leo slammed back into Sarah with brutal force. Her cry was muffled against his forearm, which he’d clamped over her mouth. “Shhhh… Mikey’s listening, you filthy little slut,” he hissed in her ear, pistoning his hips. His balls slapped wetly against her ass with each deep thrust. “You want him to hear you getting your cunt wrecked by your fiancé’s best friend? Want him to hear you cumming on my cock?” He ground his pelvis hard against her, his pubic bone grinding into her clit. The dual assault was unbearable. Pleasure coiled, impossibly tight, deep in her belly. Her eyes rolled back. She nodded frantically against his arm, tears leaking from the corners of her eyes, mixing with the condensation on the glass.
Mikey stopped a few feet from the driver’s side door. He could hear it now – low, rhythmic grunts, punctuated by sharp, wet slaps. Definitely not detailing. Definitely not explaining brake pads. His hand hovered near the fogged window. He could wipe a patch clear. See. Know. His knuckles whitened. The image of Sarah’s sweet, naive face flashed in his mind. Then the image of Leo’s intense, possessive stare whenever Gerald talked about her. The thick scent in the air intensified. He heard a sharp intake of breath, a choked sob from inside the car. It sounded… pained. Or ecstatic. He couldn’t tell.
He dropped his hand. Turned sharply on his heel. Grabbed his jacket. Fuck it. Not his business. Gerald was an idiot. Leo was… intense. Sarah was an adult. Probably. He practically ran for the side door, fumbling with the latch, desperate to escape the oppressive atmosphere. The door slammed shut behind him, plunging the garage back into near-silence, broken only by the relentless sounds of flesh pounding flesh and stifled cries from within the black sedan.
Leo felt Mikey’s presence recede. He ripped his arm from Sarah’s mouth. “They’re gone,” he rasped, his thrusts becoming frenzied, brutal. “Just you and me now, Sarah. All fucking weekend.” He hooked his arms under her knees, yanking her legs wide open, spreading her obscenely against the steering wheel. The new angle drove his cock impossibly deep, hitting a spot that made her scream, raw and unfiltered. Her body arched violently, her cunt clamping down on him like a vice, milking him. He roared, slamming into her with jackhammer force, his release surging hot and thick deep inside her already overflowing pussy. Sarah convulsed beneath him, her own climax tearing through her like a lightning bolt, wave after wave of blinding, shattering pleasure ripping away any coherent thought except LeoLeoLeo.
As the violent tremors subsided into exhausted trembles, Leo stayed buried inside her, his weight heavy on her back. He nuzzled her damp hair. “See?” he murmured, his voice thick with satisfaction. “Told you we weren’t done. Not even close.” He shifted slightly, his softening cock still plugging her full of his cum. He traced a possessive finger down her spine, over the bite marks on her shoulder. “Garage is locked up tight. Weekend starts now.” He reached down, fingers finding her swollen clit again, already slick with their mixed fluids. She whimpered, a sound of utter exhaustion and helpless arousal. He chuckled, low and dark. “Plenty more where that came from, princess. Gonna make you cum so many fucking times you forget your own name. Forget his name.” His fingers began their cruel, delicious work again. Sarah closed her eyes, surrendering to the inevitable tide. The fog on the windows glowed faintly in the dying light filtering through the skylights. Outside, the world moved on. Inside Gerald’s sedan, trapped in their sweaty, cum-slicked world of sin, Sarah and Leo were just getting started. The marathon had begun.