1951 GM Le Sabre

(from General Motors Press Release)  One of the most famous concept cars was the 1951 Buick LeSabre. Designed by Harley J. Earl’s studio with styling cues from jet fighter planes and used by him for years as an everyday driver, the LeSabre offered a preview of the aircraft styling that followed in the ’50s. The ‘51 LeSabre contained such technological features as a dual gasoline and alcohol fuel system and a moisture sensor which would raise the convertible top if it began raining when the owner was away from the car.