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What's it like to hold both the Formula One and Indy Car world titles at the same time? Only one man in history can answer that question - Nigel Mansell.

The British driver was crowned F1 world champion in 1992 and then, following a disagreement with his team Williams, Mansell moved to Indy Car and won the championship in 1993.

Mansell has been speaking about the sport in the US and recalled his World Championship winning season to Sportsworld's Lee James

Picture: Lewis Hamilton wins the US Grand Prix (credit: Getty)