There are alternatives, but those corporations you speak of are going to have to play a vital role in developing some of the alternatives. For example, for ethanol to be a viable source that is affordable the oil companies are in the best position to make it both of these things. The infraccstructure is already in place. If they do not do it on their own then the government can push companies into developing the alternatives through various incentives. To me, this is more an issue of national security and besides lowering dependence on foreign sources, it puts American companies out front and more competitive with foreign companies. It is good for all Americans when that happens.