Carroll Shelby was on hand for the unveiling of the 2013 Shelby GT500 on the eve of the LA Auto Show, calling it “the greatest Mustang ever built.” He’s got good reason to say so too, with Ford billing the car as having the most powerful production V8 engine in the world. Exactly how much is that? And what else doe the new Shelby GT500 deliver? Watch the video after the jump to find out.