1968 Chevrolet Camaro Z-28
When it comes to rarity, nothing is as rare as the Camaro Z28 convertible. There was only one unit produced, and it was an executive creation – it even went to the then GM chief Pete Estes. The Z28 convertible had a Fathom Green paint scheme, and it looked really cool.
The car was fitted with the highest-end features from Chevrolet. A performance suspension, 4-wheel disc brakes, Koni shocks, among other performance features. Under the hood of this Camaro Z28 convertible was a 302ci V8 engine with 360 horsepower.
1967 Chevrolet Corvette L88
The L88 C2 Chevrolet Corvette is the most coveted Corvette of all time. They are quite a rare collection of classic cars that not everybody can lay their hands on. Even more rare are the convertible versions. At least three known examples of the 1967 Chevrolet Corvette L88 were produced, one of which was sold for 3.2 million dollars in 2013.
The car was built as a race car, and Chevrolet indirectly discouraged people from buying them for road use. They intentionally discarded the stereo and the heater from the car.