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Co-op America has launched a campaign to encourage automakers to mass produce plug-in hybrid vehicles. This includes a demonstration outside the Washington Auto Show. Co-op America believes that the technology is ready and that customers deserve 100-mpg vehicles in 2010.

With all the attention we've been giving lately to the mega-ethanol plants, I thought it was time to shift gears and highlight the options for the DIY crowd. It's not easy to make biofuel yourself, but it's a lot of fun to turn waste grease into something your car can drink.