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 On October 21, 2015, the futuristic date depicted in "Part II", the entire trilogy was re-released theatrically for one day in celebration of the film's 30th anniversary. "Back to the Future" spent 11 weeks at number one. Gale recalled "Our second weekend was higher than our first weekend, which is indicative of great word of mouth. "National Lampoon's European Vacation" came out in August and it kicked us out of number one for one week and then we were back to number one." The film went on to gross $210.61 million in North America and $178.5 million in foreign countries,