Guy comes out of prison and finds that his loot has disappeared. He is followed by black vehicles with shaded windows. I thought the title was something like "Sliders" or "Slithers" It turns out that the bad guys have bought these vehicles with his money intending to set up a legitimate business which went bust and they are afraid he will come after them - so they are going to get him first.
Please help me remember the title. It was probably in the '70s
Please help me remember the title. It was probably in the '70s