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 anniversary in 2015. Zemeckis and Gale reunited to write the play, while Silvestri and Glen Ballard provide music. The scenes of Marty McFly skateboarding in the film took place during the infancy of the skateboarding sub-culture and numerous skateboarders, as well as companies in the industry, pay tribute to the film for its influence in this regard. Examples can be seen in promotional material, in interviews in which professional skateboarders cite the film as an initiation into the action sport, and in the public's recognition of the film's influence. "Back to the Future" is ranked tenth on Film4's "50 Films