Black late 1960's camaro killing people

After an unbearably creepy negotiation with some skeevy car dudes, a mechanic has to fight off a demonic monster inhabiting her dream 1978 Camaro.

A young car thief and a flamboyant dancer meet and fall in love all while being hunted by corrupt cops for a bag of money.

The film within the film SLACK. Johnny Boy is back, and he wants it all, the money, the drugs, all of it. Unfortunately, it's all left town in an 86 Camaro.