Certainly, as I mentioned in my remarks, as refiners we ultimately have no control over the demand for our product, but one of the ways you can alter that demand and ultimately alter the emissions is to improve vehicle efficiency. Certainly, that's one of the steps we see as part of an overall approach to the transportation sector, steps to improve vehicle efficiency, again, though, in line with what's being done in the broader context of what is a highly integrated North American market.
On December 1st, 2009. See this statement in context.