The 1959 Cadillac Cyclone was **Harley Earl's final "dream car"59 Cadillac Cyclone was Harley Earl's final "dream car" for General Motors, designed as a flamboyant testbed for futuristic technology and styling inspired by the burgeoning space age. This two-seat prototype featured rocket-tube bodywork, soaring fins, and a plexiglass bubble canopy that retracted into the rear deck. Its groundbreaking innovations included electrically sliding doors and a sophisticated radar-based collision avoidance system, with sensors housed in twin nose cones, that electronically warned the driver of objects ahead. Though never mass-produced, the Cyclone remains preserved in the GM Heritage Collection.