Paul Sandner Moller (born December 11, 1936 in Fruitvale, British Columbia, Canada) is a Canadian engineer who has spent over fifty years developing the Moller Skycar personal vertical takeoff and landing (VTOL) vehicle. The engine technology developed for the Skycar has also been adapted as a UAV platform called the "aerobot". The rotapower engine itself has been spun off to a separate Moller company, Freedom Motors.