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: The Game car into the upcoming Hill Valley Science Expo. Meanwhile, Edna is picked up by Citizen Brown, and when she relates what Marty has done, Brown decides to help her to stop Marty's plan. At the Expo, Edna and Brown attempt to sabotage Emmett's display, but Marty discovers them in time. During this, he happens to learn that Edna was responsible for the arson of Kid's speakeasy. During the Expo, Emmett successfully demonstrates his flying car, just as Judge Brown arrives. Marty is able to help Emmett and Judge Brown reconcile their differences, with Emmett's father now accepting his son's science