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He either did get a ticket driving at 186 mph or he didn't. My best guess is that he didn't, purely on the grounds that the A1203 Limehouse Link Road is not long enough for that speed to have been achieved, even in a Veyron.
So why did he say it in the first place ? As a high-profile figure in the motoring world, he should be campaigning for road safety, not continually mocking the authorities in their fight against speeding. Instead he continues to behave like a silly school boy, who thinks its funny to sit in the back of the class, farting away to amuse similar juveniles like him.