Investor’s Business Daily: Everywhere today cash is good to have and hard to come by. Nowhere is this more evident than in the world of biofuels. With ethanol producers and developers hurting, only Big Oil, it almost seems, has the green to go green. Whipsawed by corn and gasoline prices, producers of first-generation ethanol have been piling up losses. Some have gone bankrupt. Meanwhile, the credit crunch has stalled investment for next-generation cellulosic ethanol. “These are not easy markets. …