Near the end of the movie, when everyone are in the cars, one after another, the view flips to the radar owned by John Cleese. It shows all of the dots (which are people) all spread out around the middle dot which is the locker containing the money, when in fact the dots should all be in a line, like they are in the cars.
Another problem with this scene is that they are all moving really slowly on the screen (one of the high-rollers comments on it) but Rowan Atkinson's character, Enrico was on a really fast moving train! Shouldn't his dot have been moving faster than the others?