Revealing mistake: When Lazarus and Klepper's vehicle goes through the wooden crates and flips over, you can see the wooden ramp used to launch the car.
Revealing mistake: When Dooley is riding his motorcycle on the bridge, he drops the cycle and it causes engine problems. Later you can see a smoke canister on the bottom of the cycle.
Revealing mistake: The device lifting the ice-cream truck (a Chevrolet LUV) is briefly visible.