Ayrton Senna of Brazil sits aboard the #1 Honda Marlboro McLaren McLaren MP4/6 Honda V12 during practice for the Iceberg United States Grand Prix on 9 March 1991 at the Phoenix street circuit, Phoenix, Arizona, United States. Visions of Sport(Photo by Mike Powell/Allsport/Getty Images)

Portrait of Ayrton Senna of Brazil as he sits aboard the #1 Honda Marlboro McLaren McLaren MP4/5 Honda V10 during practice for the Hungarian Grand Prix on 12 August 1989 at the Hungaroring Circuit, Budapest, Hungary. (Photo by Pascal Rondeau/Getty Images)

Ayrton Senna of Brazil, driver of the #1 Honda Marlboro McLaren McLaren MP4/6 Honda RA121E V10 during practice for the Mobil 1 German Grand Prix on 27th July 1991 at the Hockenheimring Circuit in Hockenheim, Germany (Photo by Pascal Rondeau/Getty Images)

Ayrton Senna of Brazil, driver of the #1 Honda Marlboro McLaren McLaren MP4/6 Honda RA121E V10 during practice for the San Marino Grand Prix on 27th April 1991 at the Autodromo Enzo e Dino Ferrari in Imola, San Marino. (Photo by Pascal Rondeau/Getty Images

Ayrton Senna of Brazil, driver of the #1 Honda Marlboro McLaren McLaren MP4/7A Honda V128 during tyre testing for the British Grand Prix on 7 July 1992 at the Silverstone Circuit in Towcester, Great Britain. (Photo by Mike Hewitt/Getty Images)

Ayrton Senna of Brazil and driver of the #1 Honda Marlboro McLaren McLaren MP4/6B Honda V12 poses for a portrait during practice for the Yellow Pages South African Grand Prix on 28th February 1992 at the Kyalami Grand Prix Circuit in Kyalami, South Africa.(Photo by Pascal Rondeau/Getty Images)

Ayrton Senna of Brazil, driver of the #1 Honda Marlboro McLaren McLaren MP4/7A Honda V128 during tyre testing for the British Grand Prix on 7 July 1992 at the Silverstone Circuit in Towcester, Great Britain. (Photo by Mike Hewitt/Getty Images)

Ayrton Senna of Brazil, driver of the #1 Honda Marlboro McLaren McLaren MP4/6 Honda RA121E V10 during practice for the San Marino Grand Prix on 27th April 1991 at the Autodromo Enzo e Dino Ferrari in Imola, San Marino. (Photo by Pascal Rondeau/Getty Images

Ayrton Senna of Brazil, driver of the #1 Honda Marlboro McLaren McLaren MP4/6 Honda RA121E V10 during practice for the Mobil 1 German Grand Prix on 27th July 1991 at the Hockenheimring Circuit in Hockenheim, Germany (Photo by Pascal Rondeau/Getty Images)

Portrait of Ayrton Senna of Brazil as he sits aboard the #1 Honda Marlboro McLaren McLaren MP4/5 Honda V10 during practice for the Hungarian Grand Prix on 12 August 1989 at the Hungaroring Circuit, Budapest, Hungary. (Photo by Pascal Rondeau/Getty Images)

Ayrton Senna of Brazil sits aboard the #1 Honda Marlboro McLaren McLaren MP4/6 Honda V12 during practice for the Iceberg United States Grand Prix on 9 March 1991 at the Phoenix street circuit, Phoenix, Arizona, United States. Visions of Sport(Photo by Mike Powell/Allsport/Getty Images)