Continuity mistake: After Roger hits the back of the box truck in front of the RV during the car chase scene, Alice is knocked forward over the counter where an open pack of a stick of butter is sitting. Alice's torso flies forward over the counter, but the next shot she is standing, and the package and the butter are not flattened by her chest, nor is there a mess on her sweater that would be there after being crushed by her.
Continuity mistake: When the mechanic asks Frank what happened to the back window on the RV, Frank says "I don't drive too well when I'm asleep" and you can see Frank is looking directly at the mechanic, but in the very next shot Frank is now looking at the dashboard.
Continuity mistake: During the chase sequence towards the end of the film, Roger's glasses keep disappearing and re-appearing between shots.
Continuity mistake: When the RV leaves the holiday park after the group find Ginger killed, look at the back of the vehicle and you will see that the window that the mechanic repaired earlier is just covered with brown paper. It changes to a patched-up window later on in the movie.
Continuity mistake: When Roger throws one of the motor bikes off the RV during the chase sequence towards the end of the film, we see a driver's view from the white truck and you can see a piece of debris going into the grass when the bike crashes onto the road. In the next shot, the same piece of debris is now next to the bike when the white truck drives into it.
Continuity mistake: When the RV is driving to Amarillo towards the end of the film, the vehicle is coming towards a detour sign and we see a group of road workers, one of which is a bearded man with a cowboy hat and no t-shirt. But when we see a view from the RV going towards the detour sign, the bearded man is seen walking towards his colleagues.
Revealing mistake: During the chase sequence towards the end of the film, Roger shoots five bullets into the windscreen of the blue car. If you look carefully, you can see there is no driver in the front seat.
Continuity mistake: When the RV is pursued by a white truck and two cars towards the end of the film, the weather changes from hot and sunny to dull between shots.
Continuity mistake: When Roger comes into the RV and tells Frank that the phone in the gas station is not working, Frank is sitting down in his chair and you can see he has nothing in front of him, but in the next shot he is holding the shotgun.
Revealing mistake: When Frank kills one of the rattlesnakes with a ski-pole in the RV, you can see that he is just stabbing the floor and not the snake.
Audio problem: When in the RV as the couples arrive at the RV park, Alice says, "Oh, this looks nice, don't you think, honey?", to which Frank replies, "Yep, pool and everything, the works." Frank is speaking with Roger's voice.
Continuity mistake: When the couples arrive at the RV park, we see a wide view of the park and Alice and Kelly are in their bathing suits walking towards the swimming pool. But a couple of shots later, the RV is parking with the couples getting out before Alice and Kelly decide to go for a swim.
Continuity mistake: When the RV is at the garage having its back window repaired, Roger is wearing a red shirt and Frank's shirt is green. When they arrive at the RV park, Roger's shirt is blue and Frank's is cream-coloured.
Continuity mistake: When Roger rams the RV into the red truck during the chase sequence towards the end of the film, the impact destroys the radiator in the process. When we see a close-up of the RV being hit by the truck with the green unit a little later on, the radiator is now completely intact.
Continuity mistake: When Frank opens the door of the microwave oven when he is showing Roger around the RV, the position of Frank's hand on the door handle changes between shots.
Continuity mistake: Watch Roger's chair during the scene when he shoots the man who is breaking into the back of the RV. When he stands up, the chair is facing the windshield but when we see Roger walking towards the back of the RV with his shotgun, the chair has mysteriously turned around and the back of it is facing the side window.
Continuity mistake: When the group leaves the RV park after they find Ginger has been killed by the cultists, Frank asks Alice to make some coffee and she goes to a cupboard and opens the door. When the camera is inside the cupboard in the next shot, the door is closed and she opens the door a second time.
Continuity mistake: When Roger is attacking the rattlesnake with a ski-pole in the RV, you can see the snake slides off the table-top surface as he does so. A few shots later, the snake is back in its original position.
Continuity mistake: During the car chase sequence towards the end of the film, Roger asks Frank what the blue truck is doing to the back of the RV. Frank then goes to the back of the RV and the sliding door is open. When the blue truck rams the RV, we cut back to Roger in the driving seat but if you look in the back, the sliding door is closed and Frank is nowhere in sight. A couple of shots later, Frank is back near the window again.
Continuity mistake: When Frank tells everyone to be quiet before dealing with the rattlesnake in the RV, the snake is on the ring on the stove. The position of the snake then changes between shots.
