Ethanol starves people, electric will only last as an idea until they have to evacuate a city block because one of them caught on fire, and hydrogen is the worst of all:
"Hydrogen is only a source of energy if it can be taken in its pure form and reacted with another chemical, such as oxygen. But all the hydrogen on Earth, except that in hydrocarbons, has already been oxidized, so none of it is available as fuel. If you want to get plentiful unbound hydrogen, the closest place it can be found is on the surface of the Sun; mining this hydrogen supply would be quite a trick. "
From http://www.thenewatlantis.com/publications/the-hydrogen-hoax
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It's all bunk
Ethanol starves people, electric will only last as an idea until they have to evacuate a city block because one of them caught on fire, and hydrogen is the worst of all:
"Hydrogen is only a source of energy if it can be taken in its pure form and reacted with another chemical, such as oxygen. But all the hydrogen on Earth, except that in hydrocarbons, has already been oxidized, so none of it is available as fuel. If you want to get plentiful unbound hydrogen, the closest place it can be found is on the surface of the Sun; mining this hydrogen supply would be quite a trick. "
From http://www.thenewatlantis.com/publications/the-hydrogen-hoax