Biodiesel isn't the way to go
This is something I've known for a long time: Study says ethanol not worth the energy.
This is one of those ideas that sound good, rather than a good, sound idea.
But researchers at Cornell University and the University of California-Berkeley say it takes 29 percent more fossil energy to turn corn into ethanol than the amount of fuel the process produces. For switch grass, a warm weather perennial grass found in the Great Plains and eastern North America United States, it takes 45 percent more energy and for wood, 57 percent.
This is because you must harvest this energy, which takes a lot of energy to harvest. Corn, wood, grass, are all dispersed over a wide area, instead of the other way around, with oil you need only drill a single hole and have all of it right there. Oil requires only a single "cracking" to separate it into the different chemicals that we use out of it. Biodiesel requires a set of processes to change biomass into biodiesel.
We need to look elsewhere to solve our energy needs.