Race - Button untouchable in Melbourne

McLaren's Jenson Button drove a pluperfect race to take the lead of the world championship in Albert Park on Sunday, keeping his head and his lead even when a safety car intervention appeared to throw a beaten Sebastian Vettel a lifeline. The 2009 world champion scored his third Australian Grand Prix victory in four years by taking the lead at the start from team mate Lewis Hamilton, who held a distant second until Vitaly Petrov stopped on the pit straight with power steering problems in his Caterham on the 36th lap and