from wikipedia
In the first episode of the 13th series of Top Gear, broadcast on 21 June 2009, it was 'revealed' that the Stig is Michael Schumacher.[57] He appeared in the studio after the Stig piloted Schumacher's own all-black Ferrari FXX[58] around the Top Gear Test Track, achieving their fastest lap time for a production car of 1:10.7. However, at the end of the show Schumacher was shown to commit many elementary driving errors in a lap of the test track, causing Jeremy Clarkson to remark "I'm not sure if Michael Schumacher is the Stig". This, along with Schumacher being credited as a guest star, separately from the Stig's presenter credit, both hint towards it being an elaborate joke. Furthermore, in the behind the scenes footage, Clarkson comments on Schumacher's appearence that, "He had no idea what any of that all was."[59]. However, the BBC have confirmed that he was, in fact, the driver for that segment.[60]