U1st a few comments then a few questions! Even if they(whoever they are) perfect bio fuel,or biodiesel, which I'm pretty sure they have,statistically it would take every inch of arable land in America to grow enough product to fuel all the vehicles in America.consequently the land used for fuel competes with the land used for food! Part of the answer lies in using the waste products from agriculture to produce biofuel. Corn,soybeans,and sugar cane, are three crops that make good biofuel (the actual crop,not it's byproducts)Perhaps if we eat less refined sugar we could use the excess sugar grown for biofuel lol I'm not a tree hugger or a knee jerk liberal,but you'd have to be a drooling cretin to not see how were f.....g up the earth! Ok now to the military multi fuel trucks.We're they basically a diesel that could run on most petroleum based fuels?,such as kerosene,jet fuel filtered cooking oil etc?I've seen them when I was in the army,but never worked on one.Do they automatically compensate for the octane of the fuel?.is there an adjustment on the injector pump for each grade of fuel? Maybe one of you worked in the motor pool. There was a teenager who converted an old Mercedes diesel sedan to run on used cooking oil,drove coast to coast on free used cooking oil. One of the problems as someone mentioned is the fat clogs up the system and freezes in winter.Just like the wax that gives #2diesel it's power in winter.Another problem is used cooking oil isn't free anymore.McDonald's claims to be using recycled cooking oil to power part of it's truck fleet.I see this as a big b.s. political move to promote sales,I don't trust corporate America or the bought and sold legislators that run America,but I trust you guys(and gals,sorry teamster grrrrl) gimme some input on this subject!