Pontiac demonstrated at full volume that show cars could indeed come to life.  Pontiac’s production version of the Trans Sport show vehicle was so successful that it sprouted clones for development partner Chevrolet and carpetbagger Oldsmobile.  Buick wanted into the dreams-come-true business with the Park Avenue Essence, displayed to auto show audiences as the Essence … Continue reading 1989: The Essence of Future Buicks