Factual error: When the crew head into Wyoming to buy alcohol, there is a shot of the sign the marks the Wyoming border. That particular design of the sign didn't come into use until after 1993, when Wyoming changed its license plates to that design.
Factual error: The film takes place in 1985, yet at one part in the movie, Stevo, Heroin Bob and Mark steal a white car that is a 1987 Chrysler (Dodge) Reliant K. and drive it into the Salt Lake.
Factual error: The Wells Fargo Center is visible in multiple shots throughout the film. It was built in 1998, the same year the film was shot. It was certainly not around when the film was set, 1985.