1955 Buick Roadmaster FacebookTweetPin 1955 Buick Roadmaster. This old car was built on Buick’s longest non-limousine wheelbase and shared its basic structure with entry-level Cadillac. FacebookTweetPin Related 1961 Chevrolet Bel Air 409 1940 Willys Coupe Mercedes-Benz Vintage Ad | Old Car 1956 Chevrolet Bel Air Nomad in Turquois/White 1950s Packard Clipper | Old Car 1956 Buick Special | Classic Car