The 1953 Buick Wildcat I was a concept car designed and built primarily to test the use of fiberglass in automobile bodybuilding. Fenderports (used for cooling) were placed on top of the fenders rather than on the sides. The one-piece windshield was a wraparound type with a 60-degree slope to the rear. When the top was down it recessed into the body of the car with a special panel covering it (eliminating the use of a boot). Official GM Photograph from the General Motors Media Archives.