BRACKLEY, ENGLAND - OCTOBER 12: (L-R) Driver Lewis Hamilton, Head of Mercedes-Benz Motorsport Toto Wolff, Managing Director, Mercedes AMG High Performance Powertrains Andy Cowell, Mercedes Executive Director (Technical) Paddy Lowe and driver Nico Rosberg celebrate with team-members after Mercedes won their second consecutive FIA F1 World Constructors Championship at the Russian Grand Prix last weekend, on October 12, 2015 in Brackley, United Kingdom. (Photo by Steve Etherington/Getty Images)