Button fastest for McLaren on day two of pre-season testing

Having failed to make it out of the garage on Tuesday, Jenson Button and McLaren put their early frustrations behind them on the second day of pre-season testing by setting Wednesday's fastest time at Jerez. Mercedes also ran well, with Nico Rosberg completing 97 laps, but it was a session to forget for world champion Sebastian Vettel as his new Red Bull RB10 managed just eight laps of the Spanish circuit before technical problems set in

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