McLaren Formula One driver Jenson Button of Britain takes a curve with his new MP4-31 F1 car during the first testing session ahead of the upcoming season at the Circuit Catalunya-Barcelona in Montmelo, Spain, February 22, 2016. REUTERS/Sergio Perez 

McLaren Formula One driver Jenson Button of Britain takes a curve with his new MP4-31 F1 car during the first testing session ahead of the upcoming season at the Circuit Catalunya-Barcelona in Montmelo, Spain, February 22, 2016. REUTERS/Sergio Perez 

McLaren Formula One driver Jenson Button of Britain takes a curve with his new MP4-31 F1 car during the first testing session ahead of the upcoming season at the Circuit Catalunya-Barcelona in Montmelo, Spain, February 22, 2016. REUTERS/Sergio Perez 

Formula One - F1 - Abu Dhabi Grand Prix 2015 - Yas Marina Circuit, Abu Dhabi, United Arab Emirates - 28/11/15
McLaren's Jenson Button during qualifying
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McLaren Formula One driver Jenson Button (L) of Britain waves at fans as he walks towards his garage during the qualifying session of Abu Dhabi F1 Grand Prix at the Yas Marina circuit in Abu Dhabi, November 28, 2015. REUTERS/Hamad I Mohammed 

McLaren Formula One driver Jenson Button of Britain speaks to a crew member as he prepares for the third free practice session of Abu Dhabi F1 Grand Prix at the Yas Marina circuit in Abu Dhabi November 28, 2015. REUTERS/Ahmed Jadallah 

Formula One - F1 - Abu Dhabi Grand Prix 2015 - Yas Marina Circuit, Abu Dhabi, United Arab Emirates - 27/11/15
McLaren's Jenson Button during practice
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Formula One - F1 - Abu Dhabi Grand Prix 2015 - Yas Marina Circuit, Abu Dhabi, United Arab Emirates - 27/11/15
McClaren's Jenson Button during practice
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Formula One - F1 - Abu Dhabi Grand Prix 2015 - Yas Marina Circuit, Abu Dhabi, United Arab Emirates - 27/11/15
McClaren's Jenson Button during practice
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Formula One - F1 - Abu Dhabi Grand Prix 2015 - Yas Marina Circuit, Abu Dhabi, United Arab Emirates - 27/11/15
McLaren's Jenson Button during practice
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Formula One - F1 - Abu Dhabi Grand Prix 2015 - Yas Marina Circuit, Abu Dhabi, United Arab Emirates - 27/11/15
McLaren's Jenson Button during practice
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Formula One - F1 - Abu Dhabi Grand Prix 2015 - Yas Marina Circuit, Abu Dhabi, United Arab Emirates - 27/11/15
Jenson Button of McLaren during practice
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Formula One - F1 - Brazilian Grand Prix 2015 - Autodromo Jose Carlos Pace, Sao Paulo, Brazil - 13/11/15
McLaren's Jenson Button during practice
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McLaren Formula One driver Jenson Button of Britain gestures at his team's garage ahead of the Brazilian F1 Grand Prix in Sao Paulo, Brazil, November 12, 2015. The Brazilian Grand Prix will be held on Sunday. REUTERS/Paulo Whitaker 

Formula One - F1 - Brazilian Grand Prix 2015 - Autodromo Jose Carlos Pace, Sao Paulo, Brazil - 12/11/15
McLaren's Jenson Button ahead of the Brazilian Grand Prix
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Formula One - F1 - Brazilian Grand Prix 2015 - Autodromo Jose Carlos Pace, Sao Paulo, Brazil - 12/11/15
McLaren's Jenson Button ahead of the Brazilian Grand Prix
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McLaren drivers Fernando Alonso (front L) of Spain, Jenson Button (front R) of Britain, test and development driver Stoffel Vandoorne (behind Button) of Belgium (2nd L bottom) pose with team members ahead of the Brazilian F1 Grand Prix in Sao Paulo, Brazil, November 12, 2015. The Brazilian Grand Prix will be held on Sunday. REUTERS/Paulo Whitaker 

McLaren Formula One driver Jenson Button (R) of Britain listens to to Williams Formula One driver Felipe Massa of Brazil during a news conference for the Brazil F1 Grand Prix in Sao Paulo, Brazil, November 12, 2015. The Brazilian Grand Prix will be held on Sunday. REUTERS/Paulo Whitaker 

McLaren Formula One driver Jenson Button (R) of Britain speaks next to Williams Formula One driver Felipe Massa of Brazil during a news conference for the Brazil F1 Grand Prix in Sao Paulo, Brazil, November 12, 2015. The Brazilian Grand Prix will be held on Sunday. REUTERS/Paulo Whitaker 

McLaren Formula One driver Jenson Button of Britain drives during the second practice session of the Mexican F1 Grand Prix at Autodromo Hermanos Rodriguez in Mexico City, October 30, 2015. REUTERS/Edgard Garrido 

McLaren Formula One driver Jenson Button (L) of Britain autographs a Mexican flag for a fan before the Mexican F1 Grand Prix at Autodromo Hermanos Rodriguez in Mexico City, Mexico, October 29, 2015. REUTERS/Henry Romero 

Fans take selfie with McLaren Formula One driver Jenson Button (R) of Britain before the Mexican F1 Grand Prix at Autodromo Hermanos Rodriguez in Mexico City, Mexico October 29, 2015. REUTERS/Henry Romero 

Formula One - F1 - United States Grand Prix 2015 - Circuit of the Americas, Austin, Texas, United States of America - 24/10/15
Jenson Button of McLaren in action during practice
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Formula One - F1 - United States Grand Prix 2015 - Circuit of the Americas, Austin, Texas, United States of America - 23/10/15
McLaren's Jenson Button in action during practice
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McLaren Formula One driver Jenson Button of Britain drives during the first practice session of the U.S. F1 Grand Prix at the Circuit of The Americas in Austin, Texas October 23, 2015. REUTERS/Mike Stone

McLaren Formula One driver Jenson Button of Britain drives during the first practice session of the U.S. F1 Grand Prix at the Circuit of The Americas in Austin, Texas October 23, 2015. REUTERS/Mike Stone

McLaren Formula One driver Jenson Button of Britain drives during the second practice session ahead of the Russian F1 Grand Prix in Sochi, Russia October 9, 2015. REUTERS/Maxim Shemetov 

McLaren Formula One driver Jenson Button of Britain of Germany drives during the second practice session ahead of the Russian F1 Grand Prix in Sochi, Russia October 9, 2015. REUTERS/Maxim Shemetov 

Force India Formula One driver Nico Hulkenberg of Germany (L) and McLaren Formula One driver Jenson Button of Britain drive during the second practice session of the Russian F1 Grand Prix in Sochi, Russia, October 9, 2015. REUTERS/Grigory Dukor 

McLaren Formula One driver Jenson Button of Britain sits in his car during the second practice session of the Russian F1 Grand Prix in Sochi, Russia, October 9, 2015. REUTERS/Grigory Dukor 

Red Bull Formula One driver Daniil Kvyat (L) of Russia and McLaren Formula One driver Jenson Button of Britain drive during the first free practice session of the Russian F1 Grand Prix in Sochi, Russia October 9, 2015. REUTERS/Maxim Shemetov 

Formula One - F1 - Japanese Grand Prix 2015 - Suzuka Circuit, Japan - 27/9/15
McLaren's Jenson Button before the race
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Spectators sit near a flag for McLaren Formula One driver Jenson Button of Britain during the Japanese F1 Grand Prix at the Suzuka circuit in Suzuka, Japan, September 27, 2015. REUTERS/Yuriko Nakao/Pool 

McLaren Formula One driver Jenson Button of Britain drives during the Japanese F1 Grand Prix at the Suzuka circuit in Suzuka, Japan, September 27, 2015. REUTERS/Toru Hanai 

Formula One - F1 - Japanese Grand Prix 2015 - Suzuka Circuit, Japan - 27/9/15
Jenson Button of McLaren in action
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Formula One - F1 - Japanese Grand Prix 2015 - Suzuka Circuit, Japan - 27/9/15
Jenson Button of McLaren in action
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McLaren Formula One driver Jenson Button of Britain waves to fans during the drivers' parade ahead of the Japanese F1 Grand Prix at Suzuka Circuit in Suzuka, Japan, September 27, 2015. REUTERS/Toru Hanai

Formula One - F1 - Japanese Grand Prix 2015 - Suzuka Circuit, Japan - 26/9/15
McLaren's Jenson Button in action
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McLaren Formula One driver Jenson Button (C) of Britain speaks to media at paddock area after the qualifying session of the Japanese F1 Grand Prix at the Suzuka Circuit in Suzuka, Japan, September 26, 2015. REUTERS/Toru Hanai

McLaren Formula One driver Jenson Button (R) of Britain speaks to media at the paddock area after the qualifying session of the Japanese F1 Grand Prix at the Suzuka Circuit in Suzuka, Japan, September 26, 2015. REUTERS/Toru Hanai

Model Jessica Michibata looks on in the garage of McLaren Formula One driver Jenson Button of Britain (unseen) during the third practice session at Suzuka Circuit in Suzuka, Japan, September 26, 2015, ahead of Sunday's Japanese F1 Grand Prix. REUTERS/Toru Hanai

McLaren Formula One driver Jenson Button of Britain prepares to put on his helmet in garage during the third practice session at Suzuka Circuit in Suzuka, Japan, September 26, 2015, ahead of Sunday's Japanese F1 Grand Prix. REUTERS/Toru Hanai

McLaren Formula One driver Jenson Button of Britain takes his driver's seat in the garage during the third practice session at Suzuka Circuit in Suzuka, Japan, September 26, 2015, ahead of Sunday's Japanese F1 Grand Prix. REUTERS/Toru Hanai

McLaren Formula One driver Jenson Button of Britain prepares to put on his helmet in garage during the third practice session at Suzuka Circuit in Suzuka, Japan, September 26, 2015, ahead of Sunday's Japanese F1 Grand Prix. REUTERS/Toru Hanai

McLaren Formula One driver Jenson Button of Britain waits in the garage during the third practice session at Suzuka Circuit in Suzuka, Japan, September 26, 2015, ahead of Sunday's Japanese F1 Grand Prix. REUTERS/Toru Hanai

McLaren Formula One driver Jenson Button of Britain removes his helmet in the garage during the second practice session in Suzuka, Japan, September 25, 2015, ahead of Sunday's Japanese F1 Grand Prix. REUTERS/Thomas Peter 

Formula One - F1 - Japanese Grand Prix 2015 - Suzuka Circuit, Japan - 25/9/15
Jenson Button of McLaren in action during practice
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Formula One - F1 - Japanese Grand Prix 2015 - Suzuka Circuit, Japan - 25/9/15
Jenson Button of McLaren during practice
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McLaren Formula One driver Jenson Button (L) of Britain gives his autoraph to a fan at the paddock area after the second practice session in Suzuka, Japan, September 25, 2015, ahead of Sunday's Japanese F1 Grand Prix. REUTERS/Thomas Peter 

McLaren Formula One driver Jenson Button of Britain puts on his helmet in the garage during the second practice session in Suzuka, Japan, September 25, 2015, ahead of Sunday's Japanese F1 Grand Prix. REUTERS/Thomas Peter 

McLaren Formula One driver Jenson Button of Britain puts on his helmet in the garage during the second practice session in Suzuka, Japan, September 25, 2015, ahead of Sunday's Japanese F1 Grand Prix. REUTERS/Thomas Peter 

Formula One - F1 - Japanese Grand Prix 2015 - Suzuka Circuit, Japan - 25/9/15
McLaren's Jenson Button in action
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Formula One - F1 - Japanese Grand Prix 2015 - Suzuka Circuit, Japan - 25/9/15
McLaren's Jenson Button in action
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McLaren Formula One driver Jenson Button of Britain drives during the first practice session in Suzuka, Japan, September 25, 2015, ahead of Sunday's Japanese F1 Grand Prix. REUTERS/Toru Hanai 

McLaren Formula One driver Jenson Button of Britain looks on from his car during the first practice session in Suzuka, Japan, September 25, 2015, ahead of Sunday's Japanese F1 Grand Prix. REUTERS/Thomas Peter 

Formula One - F1 - Japanese Grand Prix 2015 - Suzuka Circuit, Japan - 24/9/15
Jenson Button of McLaren signs autographs for fans
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Formula One - F1 - Japanese Grand Prix 2015 - Suzuka Circuit, Japan - 24/9/15
Jenson Button of McLaren during the press conference
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Formula One - F1 - Japanese Grand Prix 2015 - Suzuka Circuit, Japan - 24/9/15
Jenson Button of McLaren during the press conference
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McLaren Formula One driver Jenson Button of Britain hands out autograph cards to fans in Suzuka, Japan, September 24, 2015, ahead of Sunday's Japanese F1 Grand Prix. Britain's 2009 world champion Button was giving nothing away on Thursday despite mounting speculation that he is gearing up to leave Formula One at the end of the season. REUTERS/Toru Hanai 

McLaren Formula One driver Jenson Button of Britain hands out autograph cards to fans in Suzuka, Japan, September 24, 2015, ahead of Sunday's Japanese F1 Grand Prix. Britain's 2009 world champion Button was giving nothing away on Thursday despite mounting speculation that he is gearing up to leave Formula One at the end of the season. REUTERS/Toru Hanai