(http://media.il.edmunds-media.com/ford/shelby-gt500/2013/ns/2013_ford_shelby-gt500_f34_ns_20812_196.jpg) The 2013 Ford Shelby GT500 convertible, which celebrates the 20th anniversary of the automaker's Special Vehicle Team, debuted on Wednesday at the 2012 Chicago Auto Show.
InsideLine