Breedlove, now 79, designed, built and piloted the world's fastest car while still in his early 20s. In 1963, he took it to the Bonneville Salt Flats in Utah and became the first to cross the 400-mph threshold. The following year, he set a new record, clocking in with a speed of more than 526 mph before crashing into a saltwater pool far beyond the course. It was the last time he drove the car.