Star John Candy died while making this film. His few remaining scenes were either not filmed or were filmed using a stand-in and were re-written not to involve him.
The character of 'John Slade' is a reference to the character of 'Cactus Jack Slade' played by Kirk Douglas in The Villain (1979)
John Candy did not want to make the film, but was contractually obligated to do so.
At the end of this movie, it says "In Loving Memory of John Candy"
There are 2 sequences in the film that feature John Candy's character in a bar. But as Candy passed away before production was completed, the second bar sequence towards the end of the film was done by re-using a portion of Candy's footage from the earlier bar sequence that shows him pouring some alcohol out of a bottle and putting the bottle down.