Chevrolet Camaro ZL1 Convertible the most powerful and most capable Brand Chevrolet "The 2013 Chevrolet Camaro ZL1 Convertible will be one of the most powerful and most capable, convertibles available at any price," said Al Oppenheiser, Camaro chief engineer. "This is a car that is guaranteed to put a smile on your face... By Car Division, 12 June, 2012