Uhhh...
Soybeans are definitely food.
Vegetable oil is made from food.
Any time you displace one crop with another, you decrease the quantity of the displaced crop and increase it's price.
It is a really, really, really bad, arrogant and contemptuous thing for a society to burn food when there are parts of the world where people are starving.
Forget soybeans, forget vegetable oils, think ALGAE!!..........And GARBAGE & TRASH.........and SEWAGE.........AND WASTE OILS..........AND COAL!!!..........ALL of these can be made into DIESEL FUELS...........
Algae to diesel production can be done anywhere there is sun. And, the food can come from raw sewage. For those CO2 nuts, C02 from fossil fuel electrical production goes to good use with algae cultivation. Such operations can be set up in waste land where there is good sunlight.
One such corporation is Green Fuel Technology of Arizona.
I'm convinced micro algae is the most promising source of renewable oil. It can optimally produce 15,000 gallons/acre/year, as opposed to corn (15 gallons/acre/year) or soybeans (48 gallons/acre/year). And it need not take one acre of productive farmland to do it.
Ignorance has its price. Let 'em starve.