Endurance

As noted in The Tyee article on the brief history of mechanical energy produced from ethanol, bio-energy is extremely inefficient. Apart from the fact biofuels offer little or no benefit in reducing greenhouse gases, the soil erosion, nitrate run-off and high food prices resulting from biofuel production make it questionable as a replacement for fossil fuels. While ethanol got the lead out of gasoline, the energy returns for biofuels are dismal.