Red Bull's Daniil Kvyat at the start of a race at the Russian round of the 2015 Formula One World Championship.

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Force India's Sergio Pérez at the start of a race at the Russian round of the 2015 Formula One World Championship.

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Toro Rosso's Max Verstappen at the start of a race at the Russian round of the 2015 Formula One World Championship.

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Red Bull's driver Daniel Ricciardo before a race at the Russian round of the 2015 Formula One World Championship.

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Lotus' driver Romain Grosjean before a race at the Russian round of the 2015 Formula One World Championship.

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Lotus' driver Pastor Maldonado in the pit lane before a race at the Russian round of the 2015 Formula One World Championship.

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Sauber's driver Marcus Ericsson in the pit lane before a race at the Russian round of the 2015 Formula One World Championship.

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Sauber's driver Marcus Ericsson in the pit lane before a race at the Russian round of the 2015 Formula One World Championship.

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Leonardo Pavoni, Pirelli president's advisor on the development of the Russian market, observing the Russian series Formula 1 circuit racing.

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David Yakobashvili, President, Russian-US Business Cooperation Council, in the paddock of the Russian series Formula 1 circuit racing.

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Pirelli’s Head of F1 Communications Roberto Boccafogli, left, and Pirelli Motorsport Director Paul Hembery in the paddock before the start of the F1 Russian Grand Prix.

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Rostec Corp. CEO Sergey Chemezov, Pirelli Tyre Russia General Director Aimone di Savoia Aosta, and Advisor to Pirelli CEO on the development of the Russian market, Leonardo Pavoni, from left, in the paddock before the start of the F1 Russian Grand Prix.

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Rosneft CEO Igor Sechin, left, and Rostec Corp. CEO Sergey Chemezov in the paddock before the start of the F1 Russian Grand Prix.

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Mercedes' Technical Director Paddy Low, Managing Director Andy Cowell, team engineers and mechanics celebrating victory in the F1 Constructors Championship.

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Mercedes' team mechanics and technicians celebrating victory in the F1 Constructors Championship.

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Mercedes' team mechanics celebrating victory in the F1 Constructors Championship.

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Mercedes' team mechanics celebrating victory in the F1 Constructors Championship.

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Red Bull's driver Daniel Ricciardo, center, participates in the Russian round of the 2015 Formula One World Championship.

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Ferrari's driver Kimi Räikkönen at the start of a race at the Russian round of the 2015 Formula One World Championship.

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Mercedes' driver Lewis Hamilton participates in the Russian round of the 2015 Formula One World Championship.

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Ferrari's driver Sebastian Vettel participates in the Russian round of the 2015 Formula One World Championship.

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Red Bull's driver Daniil Kvyat before the start of a race at the Russian round of the 2015 Formula One World Championship.

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Mercedes' driver Lewis Hamilton participates in the Russian round of the 2015 Formula One World Championship.

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Force India's Sergio Pérez participates in the Russian round of the 2015 Formula One World Championship.

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Force India's Sergio Pérez participates in the Russian round of the 2015 Formula One World Championship.

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Mercedes' driver Lewis Hamilton participates in the Russian round of the 2015 Formula One World Championship.

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Ferrari's driver Sebastian Vettel participates in the Russian round of the 2015 Formula One World Championship.

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Red Bull's driver Daniil Kvyat participates in the Russian round of the 2015 Formula One World Championship.

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Red Bull's driver Daniil Kvyat participates in the Russian round of the 2015 Formula One World Championship.

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Ferrari's driver Sebastian Vettel participates in the Russian round of the 2015 Formula One World Championship.

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Force India's driver Sergio Pérez participates in the Russian round of the 2015 Formula One World Championship.

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Mercedes F1 team driver Nico Rosberg prior to the start of the 2015 Formula One Russian Grand Prix race.

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Mercedes' driver Lewis Hamilton participates in the Russian round of the 2015 Formula One World Championship.

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Mercedes F1 team driver Lewis Hamilton at the finish of the 2015 Formula One Russian Grand Prix race.

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Mechanics of the Force India F1 team driver Sergio Perez during the 2015 Formula One Russian Grand Prix race.

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Mercedes' driver Lewis Hamilton participates in the Russian round of the 2015 Formula One World Championship.

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Ferrari's driver Sebastian Vettel participates in the Russian round of the 2015 Formula One World Championship.

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Ferrari's driver Sebastian Vettel participates in the Russian round of the 2015 Formula One World Championship.

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Red Bull's driver Daniil Kvyat participates in the Russian round of the 2015 Formula One World Championship.

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A technical worker during the 2015 Formula One Russian Grand Prix race.

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Mercedes F1 team driver Lewis Hamilton at the finish of the 2015 Formula One Russian Grand Prix race.

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Force India F1 team driver Sergio Perez, third place winner at the 2015 Formula One Russian Grand Prix, during the awarding ceremony.

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From right: Sauber F1 team driver Felipe Nasr and Lotus team's Pastor Maldonado during a race at the 2015 Formula One Russian Grand Prix.

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Winners of the 2015 Formula One Russian Grand Prix during the awarding ceremony. From left: Ferrari F1 team's driver Sebastian Vettel, second place, and Force India's driver Sergio Perez, third place.

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From left: Mercedes F1 team drivers Lewis Hamilton and Nico Rosberg during a race at the 2015 Formula One Russian Grand Prix.

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Mercedes F1 team driver Lewis Hamilton, winner of the 2015 Formula 1 Russian Grand Prix, during the awarding ceremony.

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Racers at the starting line during the Formula 1 Racing Grand Prix race.

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Red Bull's Daniil Kvyat during the race at the Formula 1 Russian Grand Prix.

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Lewis Hamilton (Mercedes) during the race at the Formula 1 Russian Grand Prix.

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Mercedes F1 team driver Lewis Hamilton, winner of the 2015 Formula 1 Russian Grand Prix, during the awarding ceremony.

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Racers at the starting line during the Formula 1 Racing Grand Prix race.

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Lewis Hamilton (Mercedes) during the race at the Formula 1 Russian Grand Prix.

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From left: Red Bull F1 team's drivers Daniil Kvyat and Daniel Ricciardo during a race at the 2015 Formula One Russian Grand Prix.

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Red Bull's driver Daniil Kvyat participates in the Russian round of the 2015 Formula One World Championship.

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Mercedes' driver Lewis Hamilton participates in the Russian round of the 2015 Formula One World Championship.

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Toro Rosso's driver Max Verstappen participates in the Russian round of the 2015 Formula One World Championship.

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From the top: Red Bull's drivers Daniel Ricciardo and Daniil Kvyat participate in the Russian round of the 2015 Formula One World Championship.

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A safety car during a race at the 2015 Formula One Russian Grand Prix.

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Mercedes' driver Lewis Hamilton participates in the Russian round of the 2015 Formula One World Championship.

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Red Bull's driver Daniil Kvyat participates in the Russian round of the 2015 Formula One World Championship.

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