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Photos: Green is the theme at Detroit auto show

January 13, 2008 10:00 AM PST

General Motors is announcing a partnership with year-and-a-half-old company Coskata in which GM will invest in the cellulosic ethanol company and test out its fuels at a planned pilot plant. GM will invest an undisclosed sum as part of Coskata's series B funding.

Coskata (named after a nature sanctuary near Nantucket, Mass.) is a biotechnology company with a process it says converts different feedstocks, including woodchips, grasses, or even trash, into ethanol at lower prices than competing cellulosic ethanol companies.

Photo by Coskata

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