Rhythm Thief said:
Ah, Duel ... what a great film.
Ever noticed how, in the final scene when the truck goes over the cliff, the driver's door is already wide open - inexplicably seeing as the truck isn't wrecked yet? Story goes, they only did one take,
using the actual truck from the movie, the stunt man leapt out at the last moment but wasn't nifty enough to close the door behind him...