Two-Lane Blacktop (1971) is perhaps the greatest street racing film of all time (sorry Fast and Furious fans). And the '55 Chevy used in the film is one of the greatest hero cars ever. In fact, it was so cool that it was also used again in American Graffiti (as the car driven by Harrison Ford). The same car.
Actually, there were three cars built by Richard Ruth for Two-Lane, and two of them were used in American Graffiti. The main car from Two-Lane was also used as the main car for American Graffiti. It was built with a 427 crate motor, M-22 Muncie, 4.88 Olds rear, fiberglass front end, doors, and trunk lid, and straight axle front suspension. It was heavily modified in the 80s and now barely resembles the car from either movie. The second car was the camera car for Two-Lane, and was used for all the interior shots. It was similar to the main car, but was built with a 454 crate motor. This same car also provided the engine sounds for the Trans Am in Smokey and the Bandit. It was restored to the condition you see in the photo below. The third car was used as the stunt car in both movies, and was rolled in American Graffiti. It was an all steel-bodied car equipped with a 454 crate motor, TH 400 automatic, and Olds rear. Sadly, this car was crushed in the late 70s. Some links and more photos after the jump.