Lewis Hamilton

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Mercedes driver Lewis Hamilton of Britain controls his car on turn five during the second practice session at Albert Park ahead of the Australian Formula One Grand Prix in Melbourne, Australia, Friday, March 14, 2014. (AP Photo/Rob Griffith)

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Mercedes driver Lewis Hamilton of Britain controls his car on turn five during the second practice session at Albert Park ahead of the Australian Formula One Grand Prix in Melbourne, Australia, Friday, March 14, 2014. Hamilton clocked the fastest time ahead of team mate Nico Rosberg. (AP Photo/Rob Griffith)

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Mercedes driver Lewis Hamilton of Britain walks past photographer during the driver portrait session in the paddock ahead of the Australian Formula One Grand Prix at Albert Park in Melbourne, Australia, Thursday, March 13, 2014. (AP Photo/Rob Griffith)

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Mercedes driver Lewis Hamilton of Britain signs autographs for fans ahead of the Australian Formula One Grand Prix at Albert Park in Melbourne, Australia, Thursday, March 13, 2014. (AP Photo/Rob Griffith)

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Red Bull driver Sebastian Vettel of Germany center, laughs with Mercedes driver Lewis Hamilton of Britain left, and Ferrari driver Fernando Alonso of Spain during a press conference ahead of the Australian Formula One Grand Prix at Albert Park in Melbourne, Australia, Thursday, March 13, 2014. (AP Photo/Andrew Brownbill)

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Formula One driver Lewis Hamilton of Mercedes sits in his car as he is pushed into the garage during pre-season testing at the Bahrain International Circuit in Sakhir, Bahrain, on Friday, Feb. 28, 2014. (AP Photo/Hasan Jamali)

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Formula One driver Daniel Ricciardo of Red Bull Racing chases Formula One driver Lewis Hamilton of Mercedes down the track during pre-season testing at the Bahrain International Circuit in Sakhir, Bahrain, on Friday, Feb. 28, 2014. (AP Photo/Hasan Jamali)

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Formula One driver Lewis Hamilton of Mercedes speeds down the track during the final day of pre-season testing at the Bahrain International Circuit in Sakhir, Bahrain, Sunday, March 2, 2014. (AP Photo/Hasan Jamali)

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Lewis Hamilton of Great Britain and Mercedes GP drives during the 2014 Formula One Testing at the Circuito de Jerez on Thursday, Jan. 30, 2014, in Jerez de la Frontera, Spain. (AP Photo/Miguel Angel Morenatti)

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Mercedes GP drivers Nico Rosberg of Germany, left, and Lewis Hamilton of Great Britain, right, pose for photos during the launch of their new Mercedes W05 Formula One car at the Circuito de Jerez on Tuesday, Jan. 28, 2014, in Jerez de la Frontera, Spain. (AP Photo/Miguel Angel Morenatti)