I am not a big German car fan. But this video is bad ass. I don't give 2 shits if it is real or fake. Just the idea is cool.
YouTube - ‪Mercedes-Benz.tv: Michael Schumacher in the SLS AMG tunnel experiment (long version)‬‎

 

cool vid

 

Fake, there is no way in hell at least they would make him do that. Well at least his sponsors would be going ape shit. As for the stunt itself, i doubt they'd use such a expensive car. Also he seems to be going 100mph at least which is not needed to pull off something like that.