One of the main concerns with something major happening is the shortage of fuel. We saw this as a prime example in the Super Storm Sandy. Fuel disappeared and the lines were hours long where they did find it. Creating biofuels is an interesting topic, however I am not a mechanic, and from what I have read there are issues involving this fuel source made from restaurant fryer oils. I have some manuals on the subject, feel free to read and download by clicking the links below.