Visible crew/equipment: In the desert, when the car knocks out Jack and stops, a boom mic is reflected on the driver's door.
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.
Jimmy Serrano: Don't say a fucking word to me, Sidney. Don't you say a fucking word, or I will get up and bury this telephone in your head.
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.