In terms of technology advances what we're seeing is that we had the basic curve that started back in the 1980s, and that was the first dedicated natural gas engine. We're now on the fourth generation. That took 25-plus years. That fourth-generation engine matches the power, torque, and performance of a diesel engine. How do we go further? For Westport their particular technology came out of UBC about 20 years ago. Again, they now have the core technology and they're really branching off that—they have an agreement with General Motors on light-duty application, and Cat on the very heavy electromotive, etc.
In terms of costs to the technology, what we see is that the price point in terms of the premium is anywhere from about 10% at the low end to about 60% at the high end. The 10% would be, say, on a garbage truck or a transit bus where the technology has been out there for a long time. As we see more of the American fleets go there, a lot of the costs are coming out of the supply chain. On the Westport technology, that's still relatively new in the market. But, for instance, there was just an announcement in the last week that Lockheed Martin is now going to come into this space and make LNG tanks for vehicles. This is exactly what is needed to drive costs out of the supply chain. That can collapse that 20-plus years into more like under 10 years to really get into that space to be competitive price point to price point with the incumbent.