The Stig is nobody specific. When cars are taken to Top Gear for the test track, I wouldn't be suprised if they only let the Manufacturers test driver drive the car around the track, and I think it was the case with the Bugatti Veyron. The speculation and the amount of interest of who 'The Stig' is really annoys me, it doesn't really matter, it's just a guy that drives fast, he could be completely crap in the real world anyway once his name is released and people realise what a racing reject The Stig really is. The Stig could be anyone in a white suit but naively people think it's the same guy every time.