MONTMELO, SPAIN - MAY 13: Nico Rosberg of Germany driving the (6) Mercedes AMG Petronas F1 Team Mercedes F1 WO7 Mercedes PU106C Hybrid turbo on track  during practice for the Spanish Formula One Grand Prix at Circuit de Catalunya on May 13, 2016 in Montmelo, Spain.  (Photo by Dan Istitene/Getty Images)