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.
Visible crew/equipment: If you look closely behind the log, as Duane and Blaine plummet over the hill in their car, as they chase the key-cutter in the hot air balloon, you can see a ramp placed, however it is painted to blend in with the ground. If you watch closely you can even see it bounce. (01:00:40)
Factual error: The bullet that was fired and travels next to the rocket car defies the laws of physics. Assuming that the bullet was fired parallel to the ground, the bullet should remain in the air for the same length of time as it would take to drop the bullet from the same height. The bullet in this scene remained in the air for a much longer period of time.
Suggested correction: This isn't how physics works. Bullets, or any object actually, that is propelled somewhat horizontally will stay in the air for much longer than it would take for it to drop to the ground. This is easy to prove for anyone at home. Get two objects and throw one horizontally and simply drop one vertically.
That is exactly how physics works. In fact, this was proven centuries ago. Unless there are aerodynamic forces in play, gravity will affect both objects the same, and they will fall at the same rate. I suggest you try the experiment you proposed yourself. (Just make sure you are not giving the thrown object an upward arc.) I just tried it myself with two pens. They both hit the floor at the same time three out of three times.
Continuity mistake: When Zack opens the cooler to see the heart, the level of ice cubes in the cooler lowers between shots. (00:58:00)
Continuity mistake: When Vicki and Mr. Grisham are stealing the money near the end, Grisham is in the driver's seat and Vicki is in the passenger's seat. After the cow lands in the car, one shot shows that Mr. Grisham is in the passenger's seat. (01:34:05)
Revealing mistake: When one of the bikers smashes the front headlight of Hitler's car, the glass smashes well before the metal pole strikes it, revealing that a small explosive was triggered to cause it. (01:07:45)
Continuity mistake: As the monster truck revs up just before it drives over the ramp, the cars parked by the ramp change between shots. (01:23:20)
Continuity mistake: When Seth Green is being pulled up the side of a radio control tower while in a truck, the rotating radio receiver which is pulling the truck upwards groans and fractures under the stress, but the rope is not taut and obviously not holding any weight. (00:32:35)
Continuity mistake: When Zack and Enrico are driving along, and they swerve past the car, two cars behind them on the road disappear, and the markings on the road completely change between these shots. (00:56:30)
Continuity mistake: When Whoopi and her daughter arrive at the Silver City station, they are in a bus. The bus passes by the station, and you can see that they are fairly close to it. When they get off the bus and run towards the station, they are much farther away.
Revealing mistake: When Zack skids his van, before hitting Enrico, you can see skidmarks in front of the van. (00:50:45)
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)
Visible crew/equipment: As everyone is leaving the casino and are starting the race, as Vera and Merrill walk out the double doors you can see a crewmember and the camera, which is pulling backwards, reflected in the other closed door. (00:23:05)
Other mistake: After the woman falls down the stairs, the lawyer asked what happened and a lady says she "tripped over that glass." How could she have seen this if she was down at the bottom of the stairs? (00:07:00)
Visible crew/equipment: When Vera and Merrill crash into the pile of cars, a skeleton rolls out of the back of the car in front of them. Then in the next shot the skeleton falls downward, and as it does you can see a thin metal wire attached to the back of the skeleton, obviously used to control it. (00:53:25)
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.
Visible crew/equipment: When the rocket car zooms past the repair mans garage and it collapses, you can see a wire running across the outside of the garage, from above the window to behind the petrol pump, and there is a white cable trailed across the road to the left of the garage - in an earlier shot you can clearly see these were not here. (01:16:00)
Continuity mistake: When Blaine and Duane are driving alongside the pierced girl in the red car, the position of the blue bands around Blaine's wrist change position between shots. (01:22:00)
Continuity mistake: When Tracy is damaging Sean's truck, she throws a fire extinguisher, a wrench and then she throws a crowbar. As the crowbar hits the truck, you can see a spanner lying on the pavement - she never threw a spanner though. (00:44:50)
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)
