WTF?
It's not a fake -- compare it to the rev fluctuations in this video; they're identical:
Link
Also, listen to THIS video!
http://youtube.com/watch?v=jNpUNNaPR...elated&search=
Also, notice the wheels in the second video...!
This video too, from the same guy who filmed the second video!
http://www.youtube.com/profile?user=Donky904
Best of all, this one!
http://www.youtube.com/watch?v=Kv-F8PnaJf4 