Duell

According to Richard Matheson, he was inspired to write the original short story "Duel" after an encounter with a tailgating truck driver on November 22, 1963, the day that John F. Kennedy was assassinated.

When Mann approaches the phone booth at the "Snakerama" he says "Odd place for a telephone booth," and gets inside, closing the door behind him. The camera pans to the right slightly, revealing the reflection of Steven Spielberg in the lower right-hand side of the glass panel, wearing what appears to be a blue Hawaiian shirt, glancing up and down at the script in his hands. Behind him, the truck's reflection can also be seen.

A scene plays out over the credits where David Mann sits on the edge of the cliff throwing stones.

For the German DVD release, the film was entirely redubbed.

Edited into Der unglaubliche Hulk: Never Give a Trucker an Even Break (1978)