Man, you guys just saw this, this is really old, and yes it is real. The wheels roll up the incline because the have weights inside (i.e. imagine weights on the top of the and it's perfectly centered but then something nudges it forward, the wheel will spin to counterbalance the weight
Uh yeah, welcome to last year, no wait, like 4 years ago hhahah..
Yes this is totally real. But it's two different shoots connected together, they couldn't make the whole thing go seamlessly so they connected two different shots.