There was the time that Ayrton Senna, his plane late into Heathrow, leapt into his hire car and hit the M25 on his way to McLaren's in Woking. Apparently doing way over the ton he was pulled by the police and was rather displeased to be greeted with the words, "Who do you think you are, Nigel Mansell ?"
However that's true, but I thought i'd post it as it makes me chuckle to think of the poor old traffic plod's face when it was explained it wasn't Our Nige, but his arch rival