It’s a meaningless gesture because the fuel economy on alcohol sucks because it’s 1/3rd less energy-dense than gasoline. So either you’re refueling more often or you’re hauling more dead weight around because of the larger fuel tank.
And what are they running the tractors on that cultivate, plant and harvest this “biomass” if not dead dinosaurs?
And it’s always a false economy to use a food product for fuel because the amount of arable land is fixed and finite. Water is near infinite but what’s available for irrigation isn’t. So you might save on fuel but it makes food more expensive in the exchange.
Isn't that what it's all about?