This Diablo was considered Chrysler designer Virgil Exner's masterpiece. The body was produced by Italy's Ghia. At just under 22 feet long, it was also the biggest convertible made by Ghia in that era.
Another Ghia-bodied Exner concept car, the XNR, recently sold at a California auction for $935,000.
An association with actor McQueen can multiply the value of a machine.