In 1968, Mark Donohue ... Z/28 — a car dipped in acid to save weight and quietly mixed up with a full-weight Z/28 racer before weigh-ins so it could be raced underweight. It's one of the stars ...
Known as "The Lightweight," this 1967 Camaro Z/28 helped Mark Donohue, Penske Racing ... an American motorsport icon, and one of the most fascinating race cars ever built. Photo: Mecum Auctions ...