This is the TV movie that put Steven Spielberg on the map, shortly before he made "The Sugarland Express". Working from a script by Richard Matheson, the film stars Dennis Weaver as a mild-mannered traveling salesman who unintentionally angers the driver of a semi truck. Suddenly, the truck is not only riding his tail but trying to run him off the road. No matter what he does (pulling over, stopping at a diner, calling the cops), he can't get rid of it. Spielberg makes the wise decision of never showing the driver, even as he cranks the voltage on the film's suspense elements. As a result, the truck itself takes on an air of satanic menace--even a personality of sorts--as it seems to hunt its human prey. Spielberg made a lot out of a little, suggesting just how skilled a storyteller he would become. "--Marshall Fine"