Interior shots of the Challenger at various times through out the movie show different dash designs. Early in the movie, we see a standard 3-spoke wheel with the 5-hole standard gauger cluster. Later, we see a Rallye gauger cluster with a Rim-Blow style wheel. These items swap back and forth until the end of the movie when once again, we see the Rallye Speedometer at 140mph.
To lead the cops off his cellular signal, Kowalski hides his cell phone in the left pocket of a light brown suitcase at the bus station. Later when cops stop the bus carrying the suitcase they find his cell phone in the right pocket of a black suitcase.
The Challenger loses the passenger side mirror during the chase scene through a building in Utah, but for several shots of the car afterwards the mirror is still there.
The FBI agents are shown using a white helicopter with striping, and then in the subsequent scene in the desert it is a black helicopter.
In the wide shots of the Charger a blue and red light can easily be seen on the passenger side visor, but on the close up shots from the front of the car the lights are not there. These switch from scene to scene.
The motorcycle the girl in the desert is riding is a Yamaha DT-250, which has a 2-stroke engine. The sound of the exhaust is from a 4-stroke engine which were mainly used by Honda at the time that motorcycle was manufactured.
Several shots show the police scanner in Kowalski's car as he is listening to the police talk about him. The scanner's LED lights are shown blinking. In this mode a police scanner is silent since it is "scanning" frequencies. If the scanner were receiving a police transmission only one LED would be lit steadily.
Utah has a highway patrol, not a state police.
Police agencies do not allow members to use their own vehicles for patrol duties. Consequently, the black Charger would not have had red and blue lights, a shotgun rack, and a police radio installed inside it.
The FBI agent says they can get the NSA to use a satellite to find the cellphone signal, and subsequently says the NSA tracked him. A satellite would be of no use, as cellphones use terrestrial towers.
The oil pan which replaces the broken one is from a small block Chev, not a big block Chrysler.
As seen multiple times in the movie, Kowalski's Challenger is restored to factory original. When the Challenger crashes into the bulldozers at the end of the movie, multiple shots show the car on fire after the explosion, and very clearly the Challenger shown which was crashed for the scene has CRAGAR style mag wheels on the back, as opposed to the original MOPAR stock Challenger wheel.
The FBI helicopter has a number of N90280. This number is actually assigned to a fixed wing aircraft manufactured in 1984.
Riddle Idaho is a real place, but little more than a State Hwy Dist gravel shed. No exterior/outdoor filming was actually done in Idaho. Mr. Mortensen does live in the northern part of the state. The Dozer crash scene was done in Williams, AZ.
When the black Charger rolls, the rear roll hoop rig can be seen in the upper corners. The scene was "back-lot" filmed by strapping the actors in, rigging the car with 2 large metal hoops, then a crew manually rolled the car. The car was a derelict, but had an expensive camera strapped to the hood.
Police announce Kowalski is at Utah 226 and Idaho 51. Should be Nevada 225 and Idaho 51 north of Mountain City, NV. Utah 226 is no where near Idaho 51.
Given the amount of distance covered, the same radio station would not reach all of the areas shown.
Kowalski and the Indian see the helicopter and are able to hide the car in time so that it cannot be seen. The helicopter as shown would have been able to easily see them since they were in an open area.