At about 14:01, after Nathalie pukes on the Police Car Windshield, the cop tries to turn on the wiper. However, what he does is actually turning on the turn-signal lamp. The operation of turning on wipers should be twisting the ring on the multi-stalk (which has ability to control wiper, high-beam, turn-signal).
In a few of the freeway scenes, including the scene where Jack asks Natalie her name, the squealing of the police cars tires are louder than the sirens in the background. The sirens should be heard over the squealing of tires.
During the incident of the cigarette lighter creating smoke inside the car, several shots show smoke blowing and lingering. After the lighter is thrown out the window, there is one shot from the front of the car where there is no smoke. Two subsequent shots show there is still smoke inside the car.
With just 10 miles to go to the Mexican border the daylight goes from bright sunlight to the dead of night. At the high-speed chase they were on, that distance would have been covered in far less than 10 minutes, far too quickly for the sun to completely set.
During the "monster truck" sequence, there's a scene inside the car. The guy in the passenger seat is shown from behind, talking to the driver. Through the windshield a jolly roger flag is visible, "pointing" left. At the speed the car is going it should "point" to the back of the car.
When Charlie explains to Natalie that he used a candy bar instead of a gun, the candy bar is hard and fresh when she opens it, not soft and melted despite being sat on by Charlie for a considerable length of time.