Is Stig the German F1 driving legend

In the recent episode of Top Gear they revealed that stig was the German F1 driving legend Michael Schumacher. But at the end of the episode they even made remarks saying that it may not be him.It would be very cool if it really was Michael Schumacher.Here is a wonderful clip from top gear of an American driving talent called Ken Block.

I wish i could drive like that.