Right now, I don't think it's very accurate, based on the deep freeze we've been in the last couple of weeks.
Alternative fuels have always been a viable alternative, but the oil cartels are a powerful lot. Why use something like corn, which can be continuously grown, or methane, which can and is made from the gaseous emissions from landfills and possibly keep fuel costs low when there's so much riches to be had from an unrenewable source?
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