Question: At the end, in the wrecks, we see a little tabletop air fan still running. Where was it before? We never saw it in the car. (01:27:10)
Question: I'm pretty sure that some of the "Duel" tanker footage was used in a different film, but I can't find any info on it. What other movies used it?
Answer: Some "Duel" footage was used for the TV series "The Incredible Hulk" in an episode titled "Never Give a Trucker an Even Break." Both the TV movie and the series were produced by Universal Studios.
Answer: It was in the truck, not the car.
The_Iceman