There are a couple of ways to look at it. First is that in the trucking industry you have the ability to do that today. When you look worldwide, you have about 10 million vehicles running on natural gas. For instance, in Europe alone you have probably between 40 and 50 different models that use natural gas. In North America we are really behind in embracing the whole concept.
We would definitely say that you need some opportunities and different styles of vehicles. In the United States you can buy one OEM--an original equipment manufactured vehicle. It is the Honda Civic GX. We have seven of them, and it's the only natural gas manufactured vehicle you have. It's a fantastic car, but not everybody wants to drive a Honda Civic. Some people like minivans; some people like trucks.
You're right. We need to work toward that, and we are meeting with the auto sector to try to encourage that. Fiat produces 16. It has probably been the leader in natural gas vehicles. It has a very large market share in Italy and Germany. We'd love to see that happen, but at the same time, you have, as Don mentioned, the chicken-and-egg phenomenon. We have a little bit of infrastructure, but we need infrastructure before you can start to generate the vehicles and begin to convert trucks.
In North America we have about 10,000 18-wheelers running on LNG right now. It is starting to happen.