Back to the Future him to 2015 to resolve a problem with their future children. The trio board the DeLorean, which has been upgraded with hover technology, and warp to the future. Writer and producer Bob Gale conceived "Back to the Future" after he visited his parents in St. Louis, Missouri after the release of "Used Cars". Searching their basement, Gale found his father's high school yearbook and discovered he was president of his graduating class. Gale had not known the president of his own graduating class, and wondered whether he would have been friends with his father if they went to high school
Hill Valley (Back to the Future) many ways in which the Courthouse building has been redressed over the years to suit the needs of a production. Many of the cars that appear in the 2015 scenes are either modified for the film or concept cars. Examples include Ford Probe, Saab EV-1, Citroën DS 21, Pontiac Banshee Concept, Pontiac Fiero and Volkswagen Beetle. Cars reused from other science fiction films include the "Star Car" from "The Last Starfighter" (1984) and a "Spinner" from "Blade Runner" (1982). Griff's car is a modified BMW 633 (which was notably never in the convertible form seen in the film). For "Back