Loretta (Tanya Tucker) and Sue Lynn (Terri Nunn) are two pretty car mechanics who spend a lot of their time fixing the car of moonshine runner Dusty (Dirk Benedict), who indulges in high speed chases with the police, sometimes involving driving through fire (won't do the paintwork much good). Caught out by the FBI, they are forced to become under cover agents to defeat the crime boss lady Stark (Sally Kirkland)...
This was one of a number of films in the late 1970s in a sub-genre sometimes called hicksploitation. They were set in the deep south of the USA, usually involving beautiful girls, fast and loud cars and a county music soundtrack! The film is light, packed full of action though no one really gets that badly hurt amid all the car crashes ands mayhem.
It is fine for what it is but the story is a bit too generic and light. Its not hard to see why it never made it beyond a pilot, but perfectly watchable.