 In the late 1930s, Pontiac used a Buick "torpedo" body for one of its models, just prior to its being used by Chevrolet, earning some media attention for the marque.An unusual feature of the "torpedo"-bodied exhibition car was that, with push of a button, the front half of the body would open showing the engine and the car's front seat interior.A major change occurred in 1937 for Pontiac, with all models except the new station wagon now using the all-steel B-body shared with Oldsmobile, LaSalle, and small Buicks.