Formula One - F1 - Brazilian Grand Prix - Circuit of Interlagos, Sao Paulo, Brazil - 13/11/2016 - Mercedes' Lewis Hamilton of Britain leaps from his car as he celebrates after winning the race. REUTERS/Nacho Doce 

Race driver Shelby Blackstock and singer Reba McEntire arrive at the 50th Annual Country Music Association Awards in Nashville, Tennessee, U.S., November 2, 2016. REUTERS/Jamie Gilliam 

British driver Lewis Hamilton of Mercedes gets ready at the Mexico Formula One Grand Prix at Autodromo Hermanos Rodriguez in Mexico City, Mexico, October 30, 2016. REUTERS/ULISES RUIZ BASURTO/EPA/Pool 

British driver Lewis Hamilton of Mercedes is seen at the Mexico Formula Uno Grand Prix at Autodromo Hermanos Rodriguez in Mexico City, Mexico, October 30, 2016. REUTERS/ULISES RUIZ BASURTO/EPA/Pool 

Aircraft of the Mexican Air Force fly over during the ceremony of inauguration of the Mexico Formula Uno Grand Prix at Autodromo Hermanos Rodriguez in Mexico City, Mexico, October 30, 2016. REUTERS/ULISES RUIZ BASURTO/EPA/Pool 

British driver Lewis Hamilton of Mercedes getting ready at the Mexico Formula Uno Grand Prix at Autodromo Hermanos Rodriguez in Mexico City, Mexico, October 30, 2016. REUTERS/ULISES RUIZ BASURTO/EPA/Pool 

British driver Lewis Hamilton of Mercedes is seen on pits at the Mexico Formula Uno Grand Prix at Autodromo Hermanos Rodriguez in Mexico City, Mexico, October 30, 2016. REUTERS/ULISES RUIZ BASURTO/EPA/Pool 

British driver Lewis Hamilton of Mercedes getting ready at the Mexico Formula Uno Grand Prix at Autodromo Hermanos Rodriguez in Mexico City, Mexico, October 30, 2016. REUTERS/ULISES RUIZ BASURTO/EPA/Pool 

Formula One F1 - U.S. Grand Prix - Circuit of the Americas, Austin, Texas, U.S., 21/10/16. Mercedes' Lewis Hamilton of Britain participates in the second practice session. REUTERS/Adrees Latif TPX IMAGES OF THE DAY

Race car driver Mario Andretti (L) and Barbra Andretti-Curto (R) arrive for a State Dinner honoring Italian Prime Minister Matteo Renzi at the White House in Washington October 18, 2016. REUTERS/James Lawler Duggan 

Britain's Prince William sits in a BAC Mono racing car, partially made of graphene, during his visit to the National Graphene Institute at the University of Manchester in Manchester, Britain October 14, 2016. REUTERS/Phil Noble TPX IMAGES OF THE DAY

Britain's Prince William sits in a BAC Mono racing car, partially made of graphene, during his visit to the National Graphene Institute at the University of Manchester in Manchester, Britain October 14, 2016. REUTERS/Phil Noble 

Britain's Prince William sits in a BAC Mono racing car, partially made of graphene, during his visit to the National Graphene Institute at the University of Manchester in Manchester, Britain October 14, 2016. REUTERS/Phil Noble 

Britain's Prince William sits in a BAC Mono racing car, partially made of graphene, during his visit to the National Graphene Institute at the University of Manchester in Manchester, Britain October 14, 2016. REUTERS/Phil Noble 

Britain's Prince William sits in a BAC Mono racing car, partially made of graphene, watched by his wife Catherine, Duchess of Cambridge, during their visit to the National Graphene Institute at the University of Manchester in Manchester, Britain October 14, 2016. REUTERS/Phil Noble 

Britain's Prince William sits in a BAC Mono racing car, partially made of graphene, watched by his wife Catherine, Duchess of Cambridge, during their visit to the National Graphene Institute at the University of Manchester in Manchester, Britain October 14, 2016. REUTERS/Phil Noble 

Britain's Prince William sits in a BAC Mono racing car, partially made of graphene, during his visit to the National Graphene Institute at the University of Manchester in Manchester, Britain October 14, 2016. REUTERS/Phil Noble 

Britain's Prince William sits in a BAC Mono racing car, partially made of graphene, during his visit to the National Graphene Institute at the University of Manchester in Manchester, Britain October 14, 2016. REUTERS/Phil Noble 

Britain's Prince William sits in a BAC Mono racing car, partially made of graphene, watched by his wife Catherine, Duchess of Cambridge, during their visit to the National Graphene Institute at the University of Manchester in Manchester, Britain October 14, 2016. REUTERS/Phil Noble 

Britain's Prince William sits in a BAC Mono racing car, partially made of graphene, during his visit to the National Graphene Institute at the University of Manchester in Manchester, Britain October 14, 2016. REUTERS/Phil Noble 

Britain's Prince William sits in a BAC Mono racing car, partially made of graphene, during his visit to the National Graphene Institute at the University of Manchester in Manchester, Britain October 14, 2016. REUTERS/Phil Noble 

Britain's Prince William sits in a BAC Mono racing car, partially made of graphene, during his visit to the National Graphene Institute at the University of Manchester in Manchester, Britain October 14, 2016. REUTERS/Phil Noble 

Britain's Prince William sits in a BAC Mono racing car, partially made of graphene, during his visit to the National Graphene Institute at the University of Manchester in Manchester, Britain October 14, 2016. REUTERS/Phil Noble 

Formula One - F1 - Malaysia Grand Prix - Sepang, Malaysia- 29/9/16. Ferrari's Kimi Raikkonen of Finland speaks to journalists at the paddock. REUTERS/Edgar Su

Formula One - F1 - Malaysia Grand Prix - Sepang, Malaysia- 29/9/16. Crew members push the car of Mercedes' Lewis Hamilton of Britain for a change of tyres. REUTERS/Edgar Su TPX IMAGES OF THE DAY

Formula One - F1 - Malaysia Grand Prix - Sepang, Malaysia- 29/9/16. McLaren's Jenson Button of Britain (C) smiles during a news conference. REUTERS/Edgar Su

Formula One - F1 - Malaysia Grand Prix - Sepang, Malaysia- 29/9/16. Mercedes' Nico Rosberg of Germany speaks during a news conference. REUTERS/Edgar Su

Formula One - F1 - Malaysia Grand Prix - Sepang, Malaysia- 29/9/16. Crew members push the car of McLaren's Jenson Button of Britain in the pit. REUTERS/Edgar Su

Formula One - F1 - Malaysia Grand Prix - Sepang, Malaysia- 29/9/16. McLaren's Jenson Button of Britain and Mercedes' Nico Rosberg of Germany speak during news conference. REUTERS/Edgar Su

Formula One - F1 - Malaysia Grand Prix - Sepang, Malaysia- 29/9/16. McLaren's Jenson Button of Britain speaks during news conference. REUTERS/Edgar Su

Formula One - F1 - Malaysia Grand Prix - Sepang, Malaysia- 29/9/16 Red Bull's Max Verstappen of the Netherlands looks on in his garage.REUTERS/Edgar Su 

Formula One - F1 - Malaysia Grand Prix - Sepang, Malaysia- 29/9/16 Mercedes' Nico Rosberg of Germany inspects his car. REUTERS/Edgar Su 

U.S. President Barack Obama reacts as he welcomes NASCAR driver Kyle Busch and his team to honor the Sprint Cup Series championship at the White House in Washington, U.S., September 28, 2016. REUTERS/Yuri Gripas 

U.S. President Barack Obama speaks as he welcomes NASCAR driver Kyle Busch and his team to honor the Sprint Cup Series championship at the White House in Washington, U.S., September 28, 2016. REUTERS/Yuri Gripas 

U.S. President Barack Obama speaks as he welcomes NASCAR driver Kyle Busch and his team to honor the Sprint Cup Series championship at the White House in Washington, U.S., September 28, 2016. REUTERS/Yuri Gripas 

U.S. President Barack Obama speaks as he welcomes NASCAR driver Kyle Busch and his team to honor the Sprint Cup Series championship at the White House in Washington, U.S., September 28, 2016. REUTERS/Yuri Gripas 

U.S. President Barack Obama speaks as he welcomes NASCAR driver Kyle Busch and his team to honor the Sprint Cup Series championship at the White House in Washington, U.S., September 28, 2016. REUTERS/Yuri Gripas 

U.S. President Barack Obama is presented a helmet from NASCAR driver Kyle Busch (L) and he welcomes his team to honor the Sprint Cup Series championship at the White House in Washington, U.S., September 28, 2016. REUTERS/Yuri Gripas 

U.S. President Barack Obama speaks as he welcomes NASCAR driver Kyle Busch and his team to honor the Sprint Cup Series championship at the White House in Washington, U.S., September 28, 2016. REUTERS/Yuri Gripas 

U.S. President Barack Obama speaks as he welcomes NASCAR driver Kyle Busch and his team to honor the Sprint Cup Series championship at the White House in Washington, U.S., September 28, 2016. REUTERS/Yuri Gripas 

U.S. President Barack Obama (R) welcomes NASCAR driver Kyle Busch and his team to honor the Sprint Cup Series championship at the White House in Washington, U.S., September 28, 2016. REUTERS/Yuri Gripas 

U.S. President Barack Obama (C) shakes hands with NASCAR driver Kyle Busch as he welcomes his team to honor Busch's Sprint Cup Series championship at the White House in Washington, U.S., September 28, 2016. REUTERS/Yuri Gripas 

U.S. President Barack Obama (R) shakes hands with NASCAR driver Kyle Busch as he welcomes his team to honor the Sprint Cup Series championship at the White House in Washington, U.S., September 28, 2016. REUTERS/Yuri Gripas 

U.S. President Barack Obama speaks as he welcomes NASCAR driver Kyle Busch and his team to honor the Sprint Cup Series championship at the White House in Washington, U.S., September 28, 2016. REUTERS/Yuri Gripas 

U.S. President Barack Obama is presented a helmet from NASCAR driver Kyle Busch (L) and he welcomes his team to honor the Sprint Cup Series championship at the White House in Washington, U.S., September 28, 2016. REUTERS/Yuri Gripas 

U.S. President Barack Obama (C) arrives on stage with NASCAR driver Kyle Busch to welcome his team to honor the Sprint Cup Series championship at the White House in Washington, U.S., September 28, 2016. REUTERS/Yuri Gripas 

U.S. President Barack Obama (R) gestures as he welcomes NASCAR driver Kyle Busch (C) and his team to honor the Sprint Cup Series championship at the White House in Washington, U.S., September 28, 2016. REUTERS/Yuri Gripas 

U.S. President Barack Obama is presented a helmet from NASCAR driver Kyle Busch (L) and he welcomes his team to honor the Sprint Cup Series championship at the White House in Washington, U.S., September 28, 2016. REUTERS/Yuri Gripas 

U.S. President Barack Obama receives a helmet from NASCAR driver Kyle Busch (L) and he welcomes his team to honor the Sprint Cup Series championship at the White House in Washington, U.S., September 28, 2016. REUTERS/Yuri Gripas 

U.S. President Barack Obama (C) poses with a helmet presented by NASCAR driver Kyle Busch (L) and he welcomes his team to honor the Sprint Cup Series championship at the White House in Washington, U.S., September 28, 2016. REUTERS/Yuri Gripas 

U.S. President Barack Obama (C) points to NASCAR driver Kyle Busch's helmet as he welcomes his team to honor Sprint Cup Series championship at the White House in Washington, U.S., September 28, 2016. REUTERS/Yuri Gripas 

U.S. President Barack Obama (R) shakes hands with NASCAR driver Kyle Busch as he welcomes his team to honor the Sprint Cup Series championship at the White House in Washington, U.S., September 28, 2016. REUTERS/Yuri Gripas 

British Formula One racing driver Lewis Hamilton attends the Cartier Fifth Avenue Mansion Reopening Party at Cartier Mansion during New York Fashion Week in Manhattan, New York, U.S., September 7, 2016. REUTERS/Andrew Kelly 

Race car driver Richard Petty speaks ahead of Republican presidential nominee Donald Trump at a campaign rally in Greenville, North Carolina, U.S., September 6, 2016. REUTERS/Mike Segar 

Belgium Formula One - F1 - Belgian Grand Prix 2016 - Francorchamps, Belgium - 28/8/16 - Mercedes' Nico Rosberg of Germany wins the Belgian F1 Grand Prix. REUTERS/Olivier Matthys/Pool TPX IMAGES OF THE DAY

Hungary Formula One - F1 - Hungarian Grand Prix 2016 - Hungaroring, Hungary - 24/7/16 Mercedes' Lewis Hamilton after the race REUTERS/Laszlo Balogh 

Hungary Formula One - F1 - Hungarian Grand Prix 2016 - Hungaroring, Hungary - 24/7/16 Mercedes team members celebrate after the race REUTERS/Laszlo Balogh 

Hungary Formula One - F1 - Hungarian Grand Prix 2016 - Hungaroring, Hungary - 24/7/16 Mercedes' Lewis Hamilton after the race REUTERS/Laszlo Balogh 

Hungary Formula One - F1 - Hungarian Grand Prix 2016 - Hungaroring, Hungary - 24/7/16 Mercedes' Lewis Hamilton celebrates after winning the race REUTERS/Laszlo Balogh 

Hungary Formula One - F1 - Hungarian Grand Prix 2016 - Hungaroring, Hungary - 24/7/16 Mercedes' Lewis Hamilton,Nico Rosberg and team members celebrate after the race REUTERS/Laszlo Balogh