Olds, a fuel cell car combines separate flows of hydrogen and oxygen to generate electricity and produce water. The power that comes out is the same power that goes into splitting water into h and o in the first place though. This radio frequency thing does basically the same thing, split water into h and o with rf excitation rather than electrolysis. But in this case the two gasses come out combined, rather than separated like in normal electrolysis, so it wont work for fueling a fuel cell. Karl is right, the engery input must be an issue. My guess is it takes considerably more energy going into the rf generator (due to inefficiencies in the rf circuit, transmittter, and absorbsion by the water) than you get back in the form of hydrogen and oxygen. This has been around for a few years now, but I never heard a good explanation of what is happening before. Now I think the reason why it hasnt already taken off is the inefficiency. The real solution to the energy and global warming problems will be a process that produces separated hydrogen and oxygen directly from sunlight, without solar electric cells. Whoever can figure that out will be richer than bill gates....