Image 16 of 20: Pretty much every original Shelby Cobra has an interesting story, but not too many of them have stories that involve the king of rock and roll. Bill Bartels's 289-powered 1965 Shelby Cobra, however, does: It's the Cobra that was used in the filming of Presley's ''Viva Las Vegas,'' as well as in another film, ''The Killers,'' during the year that MGM leased the Cobra from Shelby.