Carpooling for Katrina?

I feel rather helpless watching Katrina bear down on Southern Louisiana, the great city of New Orleans and the entire state of Mississippi. This could be an enormous disaster that ripples well beyond the directly affected disaster zone. Indeed, the port of Southern Louisiana handles a significant percentage of US oil imports from abroad. There are also major offshore and onshore oil production and refining facilities that will at least be closed for at least a few precious days, instead of running at full capacity, necessary to maintain current supply levels. If they are severely damaged (it may take weeks or months to bring back online) the economic impacts will echo throughout the entire United States. Katrina could reduce the gas supply by 5-10%. The impact on prices could be significant.
What can we New Yorkers do to help soften the economic blow? Reduce our gas consumption in any ways that make sense. In a word: Carpool!

Peak Oil NYC