A Behind-The-Sans (behind the curtain) of famous filmmaker Steven Spielberg’s classic film ‘Duel’ (behind the curtain) is becoming very viral on social media these days. The video shows the production of the film’s iconic truck crash scene, in which the makers used miniature effects (small models) in a very brilliant way. Made in 1971, the film shown the thrill of chasing on the streets between a dangerous truck and a car, and its climax scene, in which the truck falls from a rock, is still fresh in the mind of cinematographers. This video, which is going viral, shows how the crew members of the film shot this amazing scene using small models and special techniques, which presents the best example of special effects of that era.