Continuity mistake: When the family stopped along the road for a break, the car towing the camper was parked diagonally to the left (not aligned with the camper). The car was visible behind Alan when he was talking to Ben, but it was not when Alan was walking toward Tyler and Charlie. Also, Alan and Ben were at various distances from the camper. (00:13:16 - 00:14:20)
Character mistake: Tyler said, "Charlie says you're [Ben] gonna tell your folks that you got that girl pregnant this weekend." "This weekend" is a misplaced modifier. Ben didn't get the girl pregnant this weekend; Ben is supposed to tell his folks this weekend that he got a girl pregnant. (00:22:15)
Deliberate mistake: The oval mirror was in a depressed wall yet was able to reflect a window within the adjacent depressed wall. (00:18:23)