In an effort to see which is the quickest way to get across London, Hammond gets on his bike, James takes to the road and Clarkson goes for a ride down the river. But will they beat The Stig who's opted for good old public transport? Clip taken from series 10 episode 5.

Watch The Stig ride public transport as Clarkson, May and Hammond join him in a race across london. What will be fastest between Stig on the Underground, Jeremy in a speedboat, Hammond on a pushbike and James May in a car?

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