Continuity mistake: When Tracy is in the helicopter, chasing Sean who's in the truck, look at the chopper's back wings/fins. The bottom one is very short, however during the chase after Tracy yells "I want my five bucks back," the back of the chopper lowers down, and the back bottom wing/fin hits the road - only in this shot it is much longer than it is in all the other shots. (00:45:20)
Continuity mistake: After dropping from the hot air balloon rope, Duane looks up and sees the car with Blaine on the hood, driving towards him. He gets up and starts to run away from the car, and behind the car in this shot is just field - previously there were cows in the field. The position of the cows change in a few following shots too. (01:01:45)
Continuity mistake: Bev is ordering Randy to stop the car, but he won't, so she head-butts him. She is wearing a red jacket, however after she head-butts him, it goes to a wider shot outside of the car, but through the car windshield you can see she or, her stunt double, has a blue denim jacket on now. (00:40:20)
Continuity mistake: As everyone is grabbing money from the duffel bag, just before all the lights turn on at the "Feed the World" concert, Merrill is getting money from the bag in one shot, but in the next shot, as the lights turn on, she is now nowhere near the bag, and with money in both hands. (01:32:40)
Continuity mistake: There is a shot of Blaine as he lays on the Cadillac's roof during the balloon/cow/keymaker/car chase. This shot is specifically for when Blaine snaps the hood ornament off of the Cadillac by accident, then stares at it in his hand. In the next shot of the car, the ornament is back on, and it stays on for the remainder of the scene.
Continuity mistake: When Seth Green and his brother are chasing the keymaker, they fly over two embankments. In both shots, upon impact they break the A-pillar in the car, resulting in the nose of the car pointing upwards and the area directly under the windscreen bent down, common in a stunt like that. In the next shot of them racing along the paddock, the car is perfectly normal.
Continuity mistake: In the scene where everybody is racing downstairs, as they all fall in the corner you can see Vera is wearing high heels. Later on in the film, especially noticeable at the rocket car scene, she now has flat shoes on. What, did they take a trip to the shoe shop during their frantic race to Silver City? (00:22:00 - 01:14:25)
Continuity mistake: At the monster truck ralley, in the first shot as the monster truck revs up, ready to jump the ramp, look at the huge advert signs behind it. One of them has "PowerBar" written on it, but in the second shot as the truck roars over the ramp, the same sign is now totally different. (01:23:25)