The 2011 Ford Shelby GT500 is so good we don't even want to associate the word "Mustang" with it anymore. Not that there's anything wrong with the Mustang – particularly the revised 2011 model. But as a sports car, the word "Mustang" conjures images of something much less than refined. If a Porsche is a scalpel, a 'roided up 'Stang is the Jaws of Life: it'll get the job done, but it ain't gonna be pretty.