[oleg]

Originally posted by dogscoff:

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Also, imagine if every house, office and factory had a solar panel on the roof - you'd hardly see them but you could probably close down a nuclear plant or two.
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All that said, it wil be interesting to see if the hydrogen car's water exhaust doesn't turn into a kind of pollution itself... we have the potential to banish petrol fumes and diesel particulates from our cities forever, but at the cost of increased humidity. Will buildings and streets be running with condensation? Will all the excess water affect precipitation?

I don't think all solar panels in Manchester can produce enough electricity to illuminate my flat on average "sunny" day

And I would't worry too much about water vapor - we'll hardly notice it.