When Tommy Boy and Richard stop at the first gas station, Richard asks Tommy Boy to fill the gas tank. Tommy realizes the hose will not reach the tank, so he must back the car up, but he leaves the door open. The door catches on a pole, and bends, screwing up the door. As he tries to close the door, you can see there is a dent on the front of the door. But, when Richard comes back from inside the gas station, he opens the door, and you can see there is no dent.