Deliberate mistake: In the scene where the ministers are all crammed into the train carriage if you look over Jim's shoulder there is a sign ("Notice" "In case of Fire" etc), while the headers are in English the actually paragraphs are written in gibberish.
Deliberate mistake: In the scene that sets up the climax involving the car, both the trunk and the gas cap are unlocked to make the filming smooth. (00:38:50)