Jeremy Clarkson reviews the new Audi R8 supercar and claims it to be one of the best supercars in the world - only to be interrupted by a competitive Richard Hammond in a Porsche 911. Which one is better - the Porsche 911 or the Audi R8? The only way to settle this argument is through a Top Gear special drag race! Who will win? Watch this clip in full to find out.

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