The New Generation Of V8 Supercars
A Commodore will still have the DNA of a Commodore, ditto for a Falcon or any other type of car that joins in. The doors will still open and close, the panels are the same shape and style of the road car, and the badges are real, too!
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A manufacturer wanting to join the V8 Supercars Championship could even come along with their own V8 engine, used under a parity system to ensure it's on par with the current units in the class, or use a 'category' engine if they wish to go with already-established technology.