In 1977, no one at 20th Century FOX expected Star Wars to be the blockbuster it turned out to be. They had another science fiction film that they expected to rake in the dough, Damnation Alley.
The creators of the game series Fallout listed this film as a major influence. There is even an add-on in Fallout: Vegas called Lonesome Road that has a lot of elements that closely match the film.
Based on a well-regarded Roger Zelazny novel and directed by Jack Smight, the film was intended to be a rousing post-apocalyptic action film featuring mutated bugs and a bad ass armored vehicle. It turned out to be a failure at the box office due to special effects that even classic Doctor Who would not have aired.
But the one thing that shines in this horrible film is the cast, especially Jan-Michael Vincent.