Plot hole: When Arnie is taking off his woman's head he presses a switch by the ear and the ear comes out. The device reaches right inside the fake head and there would be no room for Arnie's real head. (00:46:00)
Plot hole: Although Marty rips the fuel line, not all the fuel would have drained out of the tank. Only the fuel that was already in the fuel line would have leaked out, meaning it could simply be patched, bled and the engine would run without a problem.
Suggested correction: A cut fuel line could absolutely drain the tank. Even if not a direct route with respect to gravity, it could still create a siphon effect and drain the tank.
Plot hole: The morning after being shot in the butt at the gas station, Mel Gibson calls witness protection, and tries alias after alias, but finds out they are unknown to the Feds because the evil dude deleted his whole file. Problem is, the agent who has been looking up the name she supposedly did not find, has the computer screen on an empty "Witness Number; K239" page. Which is the right one! How is it possible? The aliases she looked up do not exist, but somehow they returned the appropriate record number. (00:29:10)
