i dont see why people think its fake...
that would be a complete waste of time to blue screen it, and nearly impossible because of the unsteady camera. doing it by hand would be even harder.
your shoes will last a while doing that, its not likeall their weight is on theri shoes, they are supporting most of their wieght by their arms.
yes someone is in the car, you can see the guy looking down and to the right as he sits on top, presumably to make sure the guy in the back or whereever has got a hold of the wheel.