I just ran across this nice little map showing whether, in your locale, a pure-electric, or, hybrid, is better for the environment. I haven't checked their methodology, but, based on the map, the states where hybrids are better use a lot of coal for electricity generation. Makes sense. http://www.climatecentral.org/news/a-roadmap-to-climate-friendly-cars-2013-16318 The only thing that seems odd about it is that the two ownership options are "50,000 miles" and "100,000 miles". No "150,000 miles"? Since 1984-1985, when they finally figured out how to do low-emissions correctly, every car I have owned has gone at least 150,000 miles before wearing out.