Lewis Hamilton: ‘This is the greatest moment of my life’

Lewis Hamilton won the United States Grand Prix to become a three-time Formula 1 world champion.

Speaking on his team radio after finishing the race, an emotional Hamilton exclaimed: “This is the greatest moment of my life.”

In winning his third world title, Hamilton equalled the records of Sir Jackie Stewart and his boyhood hero Ayrton Senna.

Ferrari's Sebastian Vettel could have kept the title race open until Mexico next weekend had he finished second, but could manage only third behind Hamilton's Mercedes team mate Rosberg.

This clip is from 5 live Formula 1 on Sunday 25 October 2015.