Trivia: All of Dennis Farina's scenes were shot in Las Vegas; he was there filming his TV series Crime Story at the same time.
Continuity mistake: When Jack and the Duke are in the restaurant car of the first train, Jack is eating a chicken leg in one shot. In the middle of a sentence he changes to eating jelly and ice cream, which he finishes. In the very next shot his bowl is full of jelly and ice cream again.
Jack Walsh: Here come two words for you: shut the fuck up.