1953 Ford Experimental Vehicle Brochure, "Laboratory on Wheels, the Ford X-100"

Ford Motor Company celebrated its 50th anniversary with the X-100, a fully functional concept car billed as a "laboratory on wheels." The X-100 featured more than 50 innovative ideas. Some of them, like the heated seats and the telephone, eventually became commonplace. Others, like the variable-volume horn and the in-car electric shaver, never quite caught on with the public.