Factual error: "Mel and Goldie board a ferry. A visible sign states 'Detroit-Racine Ferry'. Detroit is on the east side of the state of Michigan but Racine, Wisconsin is west of Michigan, across Lake Michigan. The only water route to get from Detroit to Racine would be to circumnavigate the entire state of Michigan.
Continuity mistake: Mel, from the time he gets shot in the butt till when he finally has the bullet extracted from said butt, alternates between walking normally & then limping, has blood on the seat of his jeans & is then bloodless, groaning in pain & then acting as if nothing hurts, then groaning in pain again, etc.