Howard's car is shot in the front left tire. A little later the right tire is flat.
The blown tire on Howard's car changes sides between shots.
When Spence and Sutter make a nighttime fuel stop hours after they've supposedly left Butte in broad daylight, signs indicate this scene actually was shot in Butte.
Rodney A. Grant's name is misspelled as Rodney A. Grand in the first set of cast credits which listed the stars in the movie. His name is correctly spelled in the final cast list.
When Sky is first seen driving her truck, the gear shift is clearly in "Park".
As the camera pans away from the trash pile the next morning, a head of a crew member is visible in the lower left corner