Na it's not Michael Schumacher. Considering the show has been running nearly 10 years there must have been many Stigs. Not including Stigs cousins abroad in America and Africa.
Much speculation, by the drinking classes, has been pointed at the former racing driver and part time (top Gear) presenter Tiff Needell.
http://en.wikipedia.org/wiki/Tiff_NeedellBeing a pragmatist I'll say it's a hired driver from one of the many racing schools in the UK. The reason I state that is because I know the rules of engagement (employment) in the BBC. You get paid less if you don't speak...hence the Stig being mute.
(A friend of mine worked on a show called "Boon" back in the 80's. His character was a motorcycle dispatch rider. He was paid £75 per day + a bonus of £50 for specialist knowledge (could ride a motorcycle) and a further bonus of £75 for supplying a motorcycle (his own Kwak 13). He only ever had one line "so that's that then" for which his daily pay was £100.)
Personally I can no longer stand the show. Clarksons and his crew are old hat here in the UK. Die-hard petrol heads may be regular viewers but I find the humour, after all these years, to be pompous, stale and more contrived than sarcastic. Clarksons rule of thumb is if it doesn't do 200MPH its crap.
