Continuity mistake: When Natalie is telling Jack that she believes him, Jack's collar is blowing in the wind in some shots but perfectly still in the next shot. (00:52:10)
Continuity mistake: At the end when Jack is arrested, there is a shot of him with his chin on the red BMW. Camera changes and he's about two feet away from the car. (01:16:45)
Continuity mistake: Just before Natalie and Jack have sex in the BMW it is blue sky outside, Jack sees the sign for the Mexican border being 10 miles away then the camera shows the speedometer reading 90mph, therefore they would be at the Mexican border in under 7 minutes (unless they went a different route which they wouldn't want to do because they are being chased by the police) however in the next scene presumably after the sex it is dark outside and they still have 1 mile left (approximately) till they reach the road block at the border, surely the sun doesn't go down THAT fast.
Continuity mistake: During the car chase scene you see the same building on the passenger side of the road several times (It is the only building like it in Houston where it was filmed). So if the car was on a straight highway it wouldn't be passing the same building over and over.
Continuity mistake: There is a shot of a police car shown with vomit on it before the scene where Kristy Swanson vomits from the passenger side window.
Continuity mistake: Throughout the entire film the positions of cars in relation to the BMW change.
Continuity mistake: Kristy Swanson vomits from the passenger side window of her car; the resulting mess ends up on the windshield of the ill-defined musical sensation turned actor Henry Rollins' police car. The incredible force of Ms. Swanson's projectile vomiting notwithstanding, as the chase progresses, Mr. Rollins' windshield becomes magically squeegee clean!
Continuity mistake: Shortly after Jack takes Natalie hostage, during the early part of the chase through town, they keep showing brief close-ups of her face where she's not wearing a hat. This is before she loses her hat out the window of the car while getting carsick.
Continuity mistake: When the female hostage talks to the kidnapper, the window of the car is open when the shot was taken from outside the car. However, the window is closed whenever it was filmed from the interior of the car. This can be seen throughout the whole movie.
