Traveling by train is often easier, cheaper and more environment friendly than traveling by car. In Australia they've taken the next step: a train that runs purely on the power of the sun.
And there are more ideas to harnass the power of the sun:
We are running out of oil, coals is something from the old days so we simply must convert to alternative energy resources. Unless we want to go back to living in the Dark Ages.
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My author page: Terrence Weijnschenk at Amazon