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Jeremy Clarkson, Richard Hammond and James May are challenged to drive from the heart of Switzerland to the north-west coast of England on just one tank of fuel. As an incentive, the first one to arrive will turn on the Blackpool Illuminations.
Back at the track, James tackles his first ever power test in the amazing Pagani Zonda F Roadster and, after years of waiting, the Stig finally sets a lap time in the remarkable Bugatti Veyron.