The third and last Corvette concept car has just been revealed with a fighter-jet-style lift-off roof. Called the CX, this concept has been produced by GM’s global studios in Michigan following on from the U.K. penned Corvette and the California SoCal Corvette . The main design feature at play here is the cockpit style section which includes the roof and windscreen that is able to lift up as one giant section enabling entry and exit of the vehicle. Yes, this means there are no doors on this Corvette. Good thing it’s a concept then.