Desert Crossing

It's a dark and rainy night as the car is crossing the desert on a lonely highway. The three teens inside the car are biding their time. It's the usual case of the two guys in the front seat and Lucy, the only girl, riding along in the back. Then, suddenly, there is a thump. What was that? Did they hit something? Was it an animal? They decide to turn back, and when they do, they find a body ....