I can't say when cars might run on lithium-ion batteries, but there's a very good chance they will be used.
Our goal is to reduce the costs of gasoline-hybrids, get a lot of people driving them, and then think about diesel-hybrids.
We believe in 10 years' time the world will be filled with hybrid cars.
In the future, the cars you see from Toyota will be 100 percent hybrid.