There is a makeout in a car scene that getting cut back to in the first 1/2 hour. The male eventually gets her topless then his hand is inside her panty. Slight bush is shown. Later it's her hand in his pants. His pants come off and she explicitly strokes and handles his penis until he's erect then felatio is implied.

The redhead from the makeout scene later is in the same car fully nude laying on the back seat.The camera angle obviously is from outside the door because it's a full shot of her nude with her hairy vulva (with her legs open giving clear view) pointed at the camera. She's gyrating as if she's having sex with an unseen person

After another cutaway, the same couple is in the back seat. It's implied he gives her oral then they switch before engaging in missionary sex

A scene with the same lady straddling the guy shows penetration. A subsiquent shot shows him penetrating her again with his penis