Other mistake: When Rusty is talking to the trucker on the C.B. radio, he hands the microphone to Kevin. Kevin never presses the talk button on the microphone when he is talking to the trucker.
Continuity mistake: Russell asks Debbie to try and slam his arm in the car's door to show its sensor. After she slams his hand the second time, the door remains open. In the next shot, it is closed. In the next wide shot, the door is now open again.
Rusty Griswold: If Vin Diesel can do it, so can I.