To steer this back to a more techie/geek topic: solar-hydrogen homes. http://www.iht.com/articles/2007/05/30/business/bgsoho.1-59865.php >From Technocrat: "A home that is self powered, accumulates and stores excess hydrogen to use on cloudy days instead of having extensive battery banks, and produces enough extra hydrogen to charge up the hydrogen powered family car." Nick