Lewis Hamilton: US Grand Prix win 'draining'
26 October 2015 Last updated at 18:27 GMT
Lewis Hamilton says his win on Sunday at the US Grand Prix was "emotionally and physically draining".
He claimed his third Formula 1 World Championship to match the number of titles won by Jack Brabham, Sir Jackie Stewart, Niki Lauda, Ayrton Senna and Nelson Piquet.
The Mercedes driver secured the title ahead of team-mate Nico Rosberg with three races remaining.