If you've never seen the 1958 BMW 507 Series II Roadster before, it might be because they only built 252 of them. Of those 252, a handful were bought by The King, who was apparently so obsessed with them that he allegedly drove Max Hoffman (the US BMW importer at the time) up a wall trying to source the German sportscar. Sadly Elvis won't be able to take advantage of the upcoming auction that this thing is poised to dominate.