You presume this video a fake?
I have no idea how he split H2O, and there is no comments about this.
He tank with water and not with hydrogen, and this is why the car is called water-powered.
I presume someone had named the video wrong. Ill quote one more time the proper understanding of the movie
Again, RT is using misleading titles.
This technology has been around for a decade, with people across all continents claiming the patent. The car doesn't "run on water", it runs on fossil fuels- but unlike classical internal combustion engines which waste over 70% of energy on thermal radiation instead of useful mechanical work- these engines have much higher engine efficiency. The concept is simple- use fuel to achieve some mechanical work- transfer excess energy to split H2O into 2*H2 + O2 and then combine these 2 again in a separate combustion chamber to regain water+ more mechanical work.
This way you waste less chemical energy- and you gain more mechanical work. This means you spend LESS fuel, but you don't run on water, the vehicle isn't "water-powered" ffs.
You can say its hybrid car that runs on water as well as non water.