The Ford Thunderbird began life in February 1953 in direct response to Chevrolet's new sports car, the Corvette, which was publicly unveiled in prototype form just a month before. Under rapid development, the Thunderbird went from idea to prototype in about a year, being unveiled to the public at the Detroit Auto Show on February 20, 1954. It was a two-seat design available with a detachable glass-fibre hard top and a folding fabric top. Production of the Thunderbird began later on in 1954 on September 9 with the car beginning sales as a 1955 model on October 22, 1954. Though sharing some design characteristics with other Fords of the time, such as single, circular headlamps and tail lamps and modest tailfins, the Thunderbird was sleeker and more athletic in shape, and had features like a hood scoop and a 150 mph (240 km/h) speedometer hinting a higher performance nature that other Fords didn't possess. Mechanically though, the Thunderbird could trace its roots to other mainstream Fords. The Thunderbird's 102.0 inches (2,591 mm) wheelbase frame was mostly a shortened version of that used in other Fords while the car's standard 292 cu in (4.8 L) Y-block V8 came from Ford's Mercury division.