I'll just say at the outset that this is always an issue when you're looking at any kind of technology. There are pros and cons to it.
We have been looking at alternative fuels. We do use ethanol. As a matter of fact, there's an increase in the use of ethanol, and there are certain advantages in terms of reducing pollutants from ethanol. At the same time, there is an increase in the use of hybrid vehicles, using another kind of technology. So there is more than one technology that we're using.
Do you have the figures?