[UFO]

All of the current US transportation needs can be handled with algal biodiesel. Methanol is actually not nearly as energy dense as normal liquid fuel, however if a fuel cell can be made to be as efficient as you claim it could perhaps claim the same range as the same volume of biodiesel in an ICE. By the way, diesel engines currently are 40% thermally efficient, and combined with a hybrid technology can be even better. What's not to like about solar energy, be it biodiesel or methanol? There is room for both, and we don't have to sacrifice our water, our climate or our arable land.