Season 16 features a race between the Porsche 911 Turbo S Cabriolet and the greatest force in the universe - gravity! Richard Hammond travels to South Africa to put the Porsche is an ultimate speed race. Jeremy Clarkson pits the Jaguar XJ against the speed of the sun in an overnight race and James May has no choice but to become Captain Fast when he takes to the track in the new Ariel Atom V8.