SPIELBERG, AUSTRIA - JULY 01: Nico Rosberg of Germany driving the (6) Mercedes AMG Petronas F1 Team Mercedes F1 WO7 Mercedes PU106C Hybrid turbo ahead of Valtteri Bottas of Finland driving the (77) Williams Martini Racing Williams FW38 Mercedes PU106C Hybrid turbo on track during practice for the Formula One Grand Prix of Austria at Red Bull Ring on July 1, 2016 in Spielberg, Austria.  (Photo by Charles Coates/Getty Images)