This one looks like a bit larger, but runs on same principle. Just water in the tank. Video is in japanese, but you will get the point… Looks like water powered cars are around the corner… I sure hope so - my greatest concern is that big oil industry will prevent these small developers to mass produce… How? Money! And if that does not work - fear, or even murder… Yeah - i know - being on the fine line of conspiracy theories now… But … did you know that ExxonMobile as one of the largest oil producers (but not the largest one, and not too different from 3-5 others), has more net income in a year than ALL CAR MAKERS worldwide combined? Now, that's power… And - what would you do to protect its dominion?