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Spanish F1 Grand Prix - Race

BARCELONA, SPAIN - MAY 13: Michael Schumacher of Germany and Mercedes GP prepares to drive during the Spanish Formula One Grand Prix at the Circuit de Catalunya on May 13, 2012 in Barcelona, Spain. (Photo by Hoch Zwei/Getty Images)

Michael Schumacher is retiring from Formula One - again

This time the seven-time F1 champion says, ''it might be forever.''