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 II new set included a featurette called "Doc Brown Saves the World", where Lloyd, reprising his role as Doc Brown, explains the reasons for the differences between the future of 2015 as depicted in "Back to the Future Part II" and in real life. The soundtrack was released by MCA Records on November 22, 1989. "AllMusic" rated it four-and-a-half stars out of five. On October 12, 2015, Intrada Records released the complete score of "Back to the Future Part II" in a 2-disc set including early scoring sessions and alternative takes. Back to the Future Part II Back to the Future