With 580 horsepower and 556 pound-feet of torque on tap, the ZL1 Convertible will probably be a very fast car. In fact, Chevy went to the trouble of listing some of the cars that the ZL1 will overpower, including the 911 Turbo S Cabriolet, the Mercedes-Bezn SL63 AMG, the Aston Martin DB9 Volante, and of course, crosstown rival, the 550-horsepower Shelby GT500. Gauntlet, thrown down.
