A recent caller to Rush illustrated a big part of the gas problem we have now, and that is that each state has their own environmental regulations that require unique formulations. If gas was the same nationwide, it would easy to divert supplies when needed. As it stands now, refineries are making "custom" gasolines for different locales, which inhibits production capabilities and limits where the gas can be sold.
We may have to consider doing that pretty soon. If that fails, just freeze the price....a solution I don't like, but we can't afford for the economy to go south.
The "custom" formulation applies mostly to California.