Duel (1971)

Description   [from Freebase]

Duel is a 1971 television (and later full-length theatrical) film starring Dennis Weaver, who plays a terrified motorist stalked on a remote and lonely road by the unseen driver of a mysterious tanker truck. It was written by Richard Matheson, based on his own short story, and directed by Steven Spielberg in his feature film directing debut. David Mann (Weaver) is a middle-aged Los Angeles electronics salesman driving his red Plymouth Valiant on a business trip. On a two-lane highway in the California desert, he encounters a grimy and rusty Peterbilt 281 tanker truck, traveling slower than the speed limit and expelling thick plumes of sooty diesel exhaust. Mann passes the unsightly truck, which promptly roars past him and then slows down. Mann passes the truck a second time and is startled when it suddenly issues a long air horn blast. The truck follows him into a filling station. While there, Mann makes a phone call to his wife (Jacqueline Scott), who is upset with him for not confronting one of their friends at a recent party who was making a pass at her.

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