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
Back to the Future Part III film played to a more materialistic idea of success, Zemeckis considered "Part III" more of a "human journey" with spiritual overtones. The shooting of the "Back to the Future" sequels, which were shot back-to-back throughout 1989, reunited much of the crew of the original. The films were shot over the course of 11 months, save for a three-week hiatus between filming of "Parts II" and "III". The most grueling part was editing "Part II" while filming "Part III", and Zemeckis bore the brunt of the process over a three-week period. While Zemeckis was shooting most of the train sequences in