Scientist you have one year left to invent Hoverboard.
In Back to the Future Part II its 2015, while Doc Brown (dad of Jules and Verne Brown, husband of Clara Clayton Brown) takes care of an unconsious Jennifer Parker, Marty McFly lands into the water after using a hoverboard during the chase, managing to escape from Griff Tannen and the gang, and as a result, they crash into the courthouse and end up in jail, preventing the robbery.