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The emphasis this week is on performance cars. Jackie Stewart shows William Woollard that what he learnt as a racing driver can help people to drive more safely on the roads. And Sue Baker tests the new Renault GTA V6 Turbo. But, with so many powerful cars on the market at the moment, do the glossy ads that sell them actually encourage drivers to break the law? Top Gear talks to the ad men and their critics.
