I am well aware of that...why make ethanol from corn, or sugar , when you can use switch grass, which is cheaper, requires less energy to grow, is more resistan

I am well aware of that...why make ethanol from corn, or sugar , when you can use switch grass, which is cheaper, requires less energy to grow, is more resistant to adverse weather than your other cash crops. Or when you can take a byproduct of an existing industry such as from saw mills or cotton gins. Sugar Cane and Corn is very expensive compared to these options.