Revealing mistake: Whenever a back projected shot is used the cars are supposedly driving at top speeds yet no-ones hair, hat, scarf etc ruffles in the wind. In fact there's no evidence of movement whatsoever. This is particularly noticeable in the scene where they are all crammed in the truck and one guy is leaning over the side shouting at drivers.
Revealing mistake: At the end when Culpepper slides down the cable on the palm tree branch, you can see the actual rigging inside the palm tree branch that is used to slide down the cable.
Revealing mistake: Watch the firetruck ladder as it sways. During the long shots showing the entire ladder, it is swaying from ground level. During close-ups, the apparent pivot point is just off the bottom of the screen, indicating a much shorter ladder was in use.
Revealing mistake: At the end when the police officer crashes through the window of the pet store and all the dogs are licking him, it is extremely obvious that it is short piece of footage being rewound and played over and over again to extend the length of the shot.
Revealing mistake: At the beginning of the movie when the car goes through the guardrails and is falling down the mountain side, at first the car is seen coming down sideways, driver side facing down. Then it mysteriously changed to be right side up in the next shot when it crashes.
Revealing mistake: During the whole movie any time someone is driving, the driver turns either way too much or not enough for the turn they are on. Even when they are driving straight, they turn the wheel as if they are going back and forth on the road in both lanes.