Continuity mistake: Tracey's hair in the helicopter jumps from under the headset to falling around her face and back again.
Continuity mistake: When Tracy and Nick arrive at Tracy's ex-boyfriend's house in her helicopter, Shawn's (Tracy's ex-boyfriend) mini-pool falls apart and water spills everywhere. He and the girl are both submerged in water and go flying. About 10 seconds later, he runs to his car in a collared shirt and he is completely dry.
Continuity mistake: After Randy gets lipstick on his hand, he smears it on the steering wheel. But when the bikers are attacking them, smashing the car up, in many shots you can see the steering wheel has no lipstick on it. It returns later, when it gives Randy a moustache. (00:56:25 - 01:08:10)
Continuity mistake: Tracy throws a wrench and other things onto her (soon-to-be-ex-) boyfriend's truck. Several dents appear, including on the roof. She also drops a can of orange paint which spills up the windshield. However, for the remainder of the movie after this scene (as her boyfriend drives it away and later Tracy throws him out and takes it herself), there isn't a single dent left on the truck. Not just as she chases her boyfriend, but for the rest of the film.
Continuity mistake: When most of the gang has arrived at Silver City, Owen jumps off of the horse he is riding, and then it cuts to a shot of Randy, who leans out of the lorry window to see what's going on. When it cuts back to Owen, Randy is suddenly sitting back normally in his seat. (01:26:45)
Continuity mistake: When Duane is about to give Blaine his key, he realises it's a fake and he then lifts the other key up, and this on has a chain on it (I think it's the tracker device, which means they still have the key that the key-cutter stole), but in the next closeup the chain has gone from the key. (00:52:20)