Continuity mistake: In the junkyard scene, Steven Austin hits a guy by opening a car door, and the window is broken and the frame is bent. In the next shot, as Steven Austin bends down, the unbroken window is visible behind him.
Continuity mistake: Throughout the motorcycle/police car chase they used two different motorcycles made 50+ years apart and just painted them both black. One is a 1940s Harley Davidson with a springer front end and the very recognizable horn below the headlight, and the other is a late 1990s (at the oldest) cruiser with a front end that's completely different in every way.