I know a person with a Rallye and thought it would be nice to hear the noise of the engine one evening. Well this person knows Heathrow pretty well and there is a big tunnel on entry to the airport. He took his supercharged vehicle and listened to the scream -apparently it was good!
Unfortunalty some 06 plate Vauxhall sports type vehicle wanted to have a piece on the way out of the tunnel. Le Rallye and le Vauxhall were screaming through the tunnel and apparently hit high MPH towards the end near Concorde. The Rallye driver backed off towards the end because braking distance etc but the Vauxhall kept on going............................ until he realised the end was near and his car was all over the place trying to gain control. On exit the spur road is there and the Vauxhall driver pulled over on the hard shoulder and the driver was clearly shaken, he clearly pooed his pants. The Rallye driver should know better but laughed and drove off.
Moral of the story if the Vauxhall driver reads this - A crazy person is a man who does not understand his vehicle. A mad person is a person who will take a car to 'his' limit but stay in contro. However, he accepts that this is not the correct behaviour.
The Rallye drive apologises for the poor behaviour and in future will keep it for the race trace. However, the sound is awesome through the tunnel at Heathrow. The noise of the cone filter is awesome. He loves it!