Cow-powered cars? Albert Straus, the founder of Straus Family Creamery, plans to make this a near reality through a new partnership with the auto industry. Mr. Straus has operated a methane biodigester since 2004 on the Straus ranch in Marshall, converting cow manure into electrical power and reducing carbon dioxide emissions by 1,600 metric tons annually. Mr. Straus now intends to feed that energy into the grid to match the use by electric cars sold…