I saw it on TV in the 80s, as best as I can recall it was produced in the 70s. I have no idea about title, actors, or plot, but I do remember the ending:
A man and a woman were driving on country roads, trying to evade the police. Possibly their goal was to cross the county line. They had a police scanner and were listening to the sheriff radio instructions to his deputies.
The couple was getting more and more boxed in until one deputy radioed back that he was nowhere near where he was told to be. The couple then realized that the sheriff was bluffing positions/manpower, so they happily made a break for it.
They crossed a railroad track and were suddenly hit by a train. Roll credits.
Does anyone know this movie?