Well it pretty much proves the laws of physics. The guy is pedaling nearly the entire time, DOING ALL THE WORK OF CHARGING, and ironically not getting any assist while he is charging, so therefore, why the heck buy the electric bike in the first place ??? Also, note how slow he is going, which very likely means he is doing a lot of work input albeit at a slow pace, so he can personally conserve his own energy, and make it the entire way. Sorry, but this is not opinion, it's simply the laws of physics. You have to think about what you are saying, and do some actual research, and at the very least, understand that if this motor was somehow doing regen better than anyone else, and required very little effort or re-charged on its own while going down hills, and then provided electric assist most of the time your were riding, they'd be selling it for a much higher price, and as people above have suggested you'd have whats historically been characterized as a perpetual motion machine. Scary that people rely on a video that is leaving so much for the user to assume. There is absolutely nothing new there, that hasn't been done before as motors can easily be used as generators. The video also portrays a mis-leading impression that he is somehow charging the battery by the few times he rotates the pedals backward. I assure you that does very very very very little in the way of charging. If you want to learn how to change the power electronics in a motor, so you can charge it while pedaling forward, just send me an email, and I'll provide the reference material for you. Its scary how gullible so many people are these days. Did they learn a thing in HS physics classes, or take any college level mechanical engineering and electrical classes ?? Or do they not teach the fundamentals anymore since I graduated from HS in 1980 ? sheesh.
