[AeroE]

No offense intended to anyone, but this makes no sense whatsoever. It would be a perpetual motion machine. As an engineer I roll my eyes every time I hear about hydrogen cars being a solution, or emission free. They are not. It takes energy to break the molecular bond between hydrogen and oxygen that compose water. When hydrogen is burned, it oxidizes and reconverts to water. It takes as much energy (more actually, given real world inefficiencies) to separate hydrogen from water than you get burning it. Where do you think the hydrogen being used in cars comes from? Mostly from natural gas (which is largely CH4), or by electrolysis of water using electricity. There is no net energy gain. Think of hydrogen as a type of battery. Not a source of energy, but a means of storing it. A hydrogen car is an electric car that is powered by a power plant that burns coal (emissions) or is nuclear powered (wind and solar are side shows-at least for our lifetimes). That is why new electric power plants (& power distribution infrastructure) are so important. Electricity (through plug-in, or hydrogen, or fuel cells which use hydrogen) is the only technology evenly remotely available to displace gasoline.