With the help of wiki, the plot is very simple,

Two NASCAR hopefuls, driver Larry Rayder and his mechanic Deke Sommers, successfully execute a supermarket heist to finance their jump into big-time auto racing. They extort $150,000 in cash from a supermarket manager by holding his wife and daughter hostage.
In making their escape, they are confronted by Larry's one-night stand, Mary Coombs. She coerces them to take her along for the ride in their souped-up 1966 Chevrolet Impala. The sheriff, Captain Everett Franklin, obsessively pursues the trio in a dragnet, only to find his outmoded patrol cars unable to catch Larry, Mary, and Deke after they ditch the Impala for a 1969 Dodge Charger R/T 440 at a flea market.
As part of the escape plan, Larry's vehicle enters an expansive walnut grove, where the trees provide significant cover from aerial tracking, and the many intersecting roads making road blocks ineffective. The trio evades several Dodge Polara patrol cars, a specially-prepared high-performance police interceptor, and even Captain Franklin himself in a Bell JetRanger helicopter. Believing they've finally beaten the police, Larry and company meet their doom when they randomly collide with a freight train pulled by an Alco S-1 locomotive.

This super 8 version has been very well edited from the feature film, the story is kept well intact.
Being only 17 minutes running, time what you have is an action packed reel, and if car chase movies are you thing then this is definatly one to have on the 8mm gauge, no CGI nonsense here, just classic cars and great stunt drivers and with Susan George in the film as well, what is there not to watch?

These prints are holding up quite well, this copy does have some fade but as you can see, the colours are still holding well, image is rock steady, clear and sharp with very good sound.

Tom,

Kind of a shocking ending to it! But as you said, a nice realistic car chase is always fun to watch. Some of the car chases made today are just too unrealistic at times...

I see Vic Morrow is in this movie, sadly losing his life in tragic accident on the set of twilight zone the movie. A good 70's movie, with legendary cars, and some great car chases, whats not to like................