E10 gasoline now standard, but E15 push stalled, so here comes E30

Big square baler harvesting wheat straw for production of cellulosic ethanolThough the Environmental Protection Agency has already ruled on ethanol-blended gasoline mixtures for 2018, that hasn't stopped ethanol advocates from pushing for a higher 30-percent blend for non-flex-fuel vehicles. The latest call for ethanol comes from corn-state ethanol refiners, farmers, and an ethanol-producer trade association, all of whom...