I've read some articles on using nuclear energy to split water directly, either at very high heat (900C) lower heat through a chemical reaction stairstep, or heat assisted electrolysis. These promise greater efficiency than wasting the heat up cooling towers. But my two cents is the inherent waste in producing liquid or gas fuels for private cars (which consume half? their life cycle energy requirements in manufacture) which sit around 23 hours a day will become unprofitable in a post fossil fuel world. The electric streetcar (which thanks to microprocessors can be automated and shrunk to closely emulate cars) will take back much of urban transportation. Push a few buttons on your cell phone and a personal streetcar of your choice pulls up in front of you. The good part is then you can charge all the costs of the vehicle directly, instead of expecting someone who has already sunk 80% of his transportation investment into his private car to leave it sit and take another mode. This will be a huge incentive to use the worlds most efficient (and only proven sustainable) vehicle - the bike. http://www.world-nuclear.org/info/inf70.htm Have at it boys!