The simple answer is yes. When I was talking about the three aspects of the technological advancements that can take place—the game changers, the things that are already in stream, and the legacy fleet—the latter two both involve the internal combustion engine. It can be the engine itself—and there is work going on there—or the automobile that the engine is driving, because it has to be looked at as a full unit, obviously.
It can be lightweighting or aerodynamics, and even driver training, believe it or not, can make as much as a 10% difference in fuel economy. Whether that driver training is actual training or vehicle control technology that deals with how fast a car can accelerate and that kind of thing, they can all play towards an overall more efficient automobile that is using an internal combustion engine. It's both the engine and the car in which it's being used.