I really don't think Sir Jackie has the time for Top Gear games, but yes, he can drive the pants off Clarkson!!!
If you google it, you'll find there are theories out there, here is the real "first" Stig, now there is a new STIG... don't know who that is tho!
http://en.wikipedia.org/wiki/The_Stig
http://www.crash.net/feature_view.asp?cid=26&id=6611