Petite and bespectacled Sierra finds herself in the backseat, the hum of the car engine a steady rhythm as she begins to touch herself. Her fingers trace the curves of her body, lingering on her breasts before slipping down to her wet pussy. She's alone, but the thrill of potential discovery only intensifies her arousal. Her moans fill the car as she fingers herself, her body writhing with pleasure. She's close, her breath coming in short gasps, and then she's there, her orgasm washing over her in waves, her body convulsing as she comes.