Revealing: When the boys drive the car over the gap in the bridge, look at the side view that shows the main jump, watch the front wheels, they lift up in the air unnaturally before the car leaves the ramp.

Plot hole: When Beth is in Josh's room she picks up the card that says "Love Tiffany" and then asks "Who is Tiffany Henderson?" She wouldn't have known her last name.

Visible crew/equipment: In the scene when Josh and Tiffany go into her dorm room after the mail room scene; Josh goes to close the door and as he does a mysterious hand catches the door from the outside and closes it for him.

Other: When the guys are walking away from the car, you can see a line of rocks laid out on the road signalling where they should stop.