Hamilton and Rosberg truce won't last in 2015 - Wolff

Mercedes boss Toto Wolff says it is only normal that Lewis Hamilton and Nico Rosberg resume a fierce rivalry when the 2015 season gets underway in March. Hamilton came out on top in a bitter battle between the Mercedes team-mates this year, but the pair appeared to end the season on good terms as Rosberg publicly congratulated his rival in Abu Dhabi.

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