Continuity mistake: Near the end, when the hitman walks out of the diner, the camera focuses on the car in the parking lot, cuts back to the hitman, then cuts back to the car. The problem is the shadows in the first shot of the car are about half a meter long, but a few seconds later they are two meters long. Obviously both takes of the car were taken hours apart.
Continuity mistake: The scene where Hoffa burns the building, Danny DeVito is sitting in the truck as the building explodes and the passenger windows break. Then in the next shot of the truck the window is intact. Then in the last shot of the truck the window is broken with pieces hanging.
Continuity mistake: When DeVito leaves the bar and goes towards the bathroom, in the shot from behind he has almost reached the arch when the shot ends. In the next shot he is almost back at the bar, and it takes a while until we can see him passing through the arch. That's impossible, even though the second shot is a bit more "close up".
Continuity mistake: At the beginning of the conversation between Hoffa and the Detroit newspaper journalist you can see Hoffa sitting in the car, turned towards the outside (talking to him), his shoulders almost parallel to the door frame. In the next shot he is sitting immediately parallel to the seat.
Continuity mistake: When Danny DeVito and Frank Whaley are talking about the note from Jimmy Hoffa in the restaurant near the end of the film, a background shot through the windows shows that the sky is very clear and plain with little sunlight, as if it were early in the day. When they walk out to deliver the meal to Hoffa, it's quite crisp with distorted sunlight, meaning it's around sunset. Obviously filmed hours apart.
