Duel is a 1971 television (and later full-length theatrical) thriller film written by Richard Matheson, which is based on his own short story. The film is the full-length film directing debut of American director, producer, and screenwriter Steven Spielberg.
Duel stars Dennis Weaver who portrays a terrified motorist driving a Plymouth Valiant who is stalked upon remote and lonely California canyon roads by the mostly unseen driver of an unkempt 1955 Peterbilt 281 tanker truck.