About 40 years ago Chevrolet commissioned a four-door version of the third-generation Corvette. Six of the cars were built by California Custom Coach in Pasadena to test the market, each requiring two donor cars for a build that preserved the stock front and rear ends while creating a four-seat passenger compartment under double-T-top roof. Each car was made by basically fusing two Corvettes together – T-tops and all – with the rear glass opening to make this a five-door hatchback sports car 30 years before the Porsche Panamera was born. It has a 5.7-litre V8 and the plan was to sell a factory-backed model called the Corvette America at a rate of 40 each year. But a projected $35,000 price tag at a time when the Corvette started at $13,000 doomed the car and just one prototype and five customer cars were built by California Custom Coach before the project was shelved.