A car full of pent-up hormones and lust, the stepsiblings let go of inhibitions. She sits astride him, her pussy lips stretching to accommodate his thick girth. He grips her hips, slamming her down as she rides him, her tits bouncing freely. She leans back, her head resting on the seat, as he pounds into her, his fingers finding her clit. The car fills with their moans and the wet sounds of their fucking. He erupts inside her, and she milks every drop, her own orgasm ripping through her as they pull into the driveway, sated and spent.