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The Duntov Turbo was built as a partnership between American Custom Industries (ACI), a company known for building replacement Corvette body panels, and Zora Arkus-Duntov. It was developed as a highly-stylized convertible sports car based on the production model Corvette. Each of the special Duntov Turbo's also came with a turbocharged V8.
Built exclusively for Hertz Rental Car, the Corvette ZHZ coupe was first introduced in 2008 as part of Hertz’s “Fun Collection.”  These Corvettes were part of a larger group of rental vehicles made up of cars like the Ford Mustang, the Nissan 350Z and the Shelby GT-H. The intent behind these rental cars was simple - provide consumers with an opportunity to rent (at a rate commensurate with the car's performance) a well-equipped sports car for a day, a weekend or even longer. 
This is no ordinary C4 coupe, but a GM Engineering test mule with VIN plate EX4607 proudly displayed in the windscreen, built in 1986 to test all the new-for-1988 features. This actual car must have spent weeks pounding round the General Motors Proving Ground at Milford, Michigan with longer runs on the road, testing all the changes for a year which saw the C4 suspension, steering and brakes vastly improved.