Who this 1939 Plymouth show car was built for we do not know, but regardless it sure makes a statement. We have seen plastic bubble tops like this before on pre-war cars in the Los Angeles area, were the aircraft industry may have developed the technology. In-terestingly it is painted in a semi-gloss paint and Goodyear made all white tires for it. The bubble top is in two pieces which are joined over the rear door and is held on by toggle type clamps (one is visible on the passenger side center post). Can any readers tell us if Plymouth built this car or was it done by the plastics industry? The Old Motor photo.