by Marshall Brain | March 3, 2009
You asked:
Why can’t cars run on cheaper cleaner fuels? Why must they run only on fossil fuels? — Allan, Hollywood, Calif.
Marshall answered:
The short answer is: There isn’t a fuel cheaper than fossil fuels. For example, to make hydrogen you have to split water into hydrogen and oxygen, which takes energy, which makes hydrogen expensive. The day there is a fuel cheaper than fossil fuels (that is abundant and as easy to store), fossil fuels are dead.
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