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 you telling me my mother's got the hots for me?". When the film was released on VHS in 1986, Universal added a "To be continued..." graphic at the end to increase awareness of production on "Part II". This caption is omitted on the film's DVD release in 2002 and on subsequent Blu-ray and DVD releases. In October 2010, in commemoration for the film's 25th anniversary, "Back to the Future" was digitally restored and remastered for a theatrical re-release in the US, the UK and Italy. The release also coincided with Universal Pictures Home Entertainment's Blu-ray Disc releases of the trilogy.