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 first film's gross. "Part III", which Universal released only six months later, experienced a similar drop. , the film received a 64% approval rating on Rotten Tomatoes, based on 59 reviews with an average rating of 6.2/10, with the critical consensus reading, ""Back to the Future II" is far more uneven than its predecessor, but its madcap highs outweigh the occasionally cluttered machinations of an overstuffed plot". The film has a score of 57 out of 100 on Metacritic, based on 17 critics, indicating "mixed or average reviews". Roger Ebert of the "Chicago Sun-Times" gave the film three out of