Prior to entering the world of motorcycling, McGee enjoyed auto racing, driving cars that included Mercedes, Ferrari, Porsche and Jaguar. She bought her first motorcycle, a 1956 Triumph Tiger Cub, in 1957. Her next bike was a Honda C110 that she used to commute to her job as a parts manager for a foreign auto shop. In 1960, she started motorcycle roadracing, often switching back and forth between the auto and roadracing circuits. It wasn't until legendary actor and racer Steve McQueen told McGee she needed to "get off that road bike and get out to the desert," that she discovered her love of desert racing.