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JEREZ DE LA FRONTERA, SPAIN - JANUARY 29: Nico Rosberg of Germany and Mercedes GP drives with flo-vis paint on the rear of the new W05 during day two of Formula One Winter Testing at the Circuito de Jerez on January 29, 2014 in Jerez de la Frontera, Spain. (Photo by Andrew Hone/Getty Images)

JEREZ DE LA FRONTERA, SPAIN - JANUARY 29:  Nico Rosberg of Germany and Mercedes GP drives with flo-vis paint on the rear of the new W05 during day two of Formula One Winter Testing at the Circuito de Jerez on January 29, 2014 in Jerez de la Frontera, Spain.  (Photo by Andrew Hone/Getty Images)