Chicago Show 2012 Highlights: 2013 Ford Shelby Mustang GT500 Convertible

Ford dropped an automotive bomb when it introduced the 650-hp, 200-mph 2013 Mustang Shelby GT500 coupe late last year at the L.A. auto show. Seemingly overnight, the bar by which all muscle machines are measured was reset—tough luck, 580-hp Chevrolet Camaro ZL1—and no one outside of Ford has even driven the thing yet. The 2013 Ford Mustang Shelby GT500 convertible debuting at the Chicago auto