Running your car on gas or grease? At today's prices, some are choosing grease, or should I say, stealing grease. I read today that restaurants across the U.S. are reporting thefts of cooking oil, which is being refined into biofuel. Apparently, the value of grease is directly correlated to the price of diesel!

I guess this is a sign of the times, but the price of soybean oil, which is used in the production of biodiesel, has increased nearly 70% in the last year and some restaurants are feeling the pinch - outside of having to lock down trash cans. Specifically, Sonic has mentioned that soybean oil costs are continuing to go up, adding to the already significant commodity cost pressures and P.F. Chang's has said it expects to see continued pressure in wok oil due to the increases in soybean pricing.