General Motors (GM) announced a partnership Sunday with Coskata Inc to use the company's breakthrough technology which affordably and efficiently makes ethanol from practically any renewable source, including garbage, old tires and plant waste. Coskata has developed a process to generate ethanol from any carbon-containing materials -- which means they are not dependent on corn. The process involves syngas and the use of proprietary microorganisms that produce ethanol. GM is banking on more and more ethanol-based fuels for their line of vehicles and Coskata offers a method to supply fuel at a reduced cost. Coskata has stated that they intend to produce ethanol for less than $1 a gallon, about half of today's cost of producing gasoline.