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An excellent power source for distilling ethanol would be the sun.
Conventional solar boilers could heat up the mixture to near boiling. Mirrors could do the rest, or heaters driven by PV cells for better controllability.
A setup like that would use the suns energy more efficiently than plain PV cells would.
It would require far less fossil fuel to build too. Or biofuel. Or solar power. Or hamster mills.
We really should no longer calculate the effort to build something by fossil fuel as if that is the only way. I might use the hamster mill factor from now on.
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2011 Honda Insight + HID, LEDs, tiny PV panel, extra brake pad return springs, neutral wheel alignment, 44/42 PSI (air), PHEV light (inop), tightened wheel nut.
  lifetime FE over 0.2 Gmeter or 0.13 Mmile.
For confirmation go to people just like you.
For education go to people unlike yourself.
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