The Buick Y-Job was the auto industry's first concept car — a 1938 Buick convertible designed by Harley Earl to showcase new technology and styling, using a Buick Super chassis and featuring innovations like power-operated hidden headlamps and electric windows.
The 1953 Cadillac Eldorado is a foundational expression of postwar American automotive hierarchy: a limited-run, top-priced convertible defined by bespoke bodywork and Harley Earl’s tailfin language. It establishes no new powertrain or chassis architecture — but it does cement styling as a primary tool of luxury positioning.