The following is a video of a race between a 600 Hp Audi R8 and two bikes at 280 Km/H in a highway in Brazil where the speed limit is not anything close to the German Autobahn... This could have turned into a disaster at any time. But it's so damn entertaining to watch! I have to say though that you should never try this. Never.
(note: the original video was removed by the user from Youtube and we totally understand why..)