There was a rumor that was circulating a few years ago. I recall it being on the internet, but not in the mainstream media.
It went, that because a Toyota Prius used lithium batteries, and that mining lithium caused so much environmental damage, the Hummer was actually better for the environment over the long term. Really?
A number of writers have since clearly disproved this. See their valid analysis here:
http://www.pacinst.org/topics/integrity_of_science/case_studies/hummer_versus_prius.html
http://www.pacinst.org/topics/integrity_of_science/case_studies/hummer_vs_prius.pdf
However, I did my own simple analysis. It was not difficult at all. The hardest part is finding the correct numbers.
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Prius - Weight Of The Battery:
