Until a viable alternative is widely used they will continue to see how much we the consumer are willing to pay. They will go up until sales drop off dramatically, then go back down for a while then yo-yo it back again. Supply and demand folks. We supply the money they demand more. If I am correct, Brazil doesn't use gasoline, they run alcohol because they have such an abundance of sugar and can make fuel alcohol cheaply. We have an abundance of corn here in the USA, we could do the same. Once the system to make it is in place, it would be cheaper to do than refining crude. Initially it would be expensive. I have read many different articles about this and they have conflicting versions of the cost of making fuel alcohol. We need to use what we have here and be less reliant on foreign oil. Of course that would mean we would have to stop supplying the rest of the world with grain.