[from occupied ga]

Three of those variables can themselves run on biodiesel

The depths of incomprehension here are sometimes staggering. They could, but they don't because there isn't enough energy left over.

If these fuel sources made us independent from foreign oil, then you could run the whole process on the biofuel as you pointed out. NO ONE HAS BEEN ABLE TO DO THIS. ALL of the biofuel production streams rely on fossil fuel as energy inputs.

Rather than my reiterating what has been published many times, read this

[GunRunner]

A new study from Cornell University and University of California-Berkeley directly challenges that, saying that turning plants such as corn, soybeans and sunflowers into fuel uses much more energy than the resulting ethanol or biodiesel generates.

Good one. I wouldn't want to argue with a bunch of guys from Berkeley who say that biodiesel causes global warming and benefits corporations. I'll bet they even have Al Gore on speed dial.

Good luck with commuting to work with a photovoltaic cell or your hydrogen powered car.