Due to errors in the stock footage used in some car chase sequences, the police car brands/models change in certain shots, as well as mirrored shots, in order to match the footage.
Lester is seen driving one of the police cars, which is a 1972 Pymouth Satellite, though in the final car chase, it changes back and forth to a 1968 model.
When Sheriff Turner is seen beating up Sheriff Bleed in the final fight sequence, Charles Howerton can be seen laughing for a second.