FILE – From top left clockwise, file picture from various dates of Formula One world champions Jenson Button of Britain, Fernando Alonso of Spain, Michael Schumacher of Germany, Kimi Raikkonen of Finland, Sebastian Vettel of Germany and Lewis Hamilton of Britain. For the first time in the history of Formula One, six world champions will be on the grid when the new season starts on Sunday March 18 2012. (AP Photo/ Files)