And this is one way to do technology forecasting get a sense of where technology is, and then anticipate the next upturn.
The first stage in a technology's advance is that it'll fall below a critical price. After it falls below a critical price, it will tend, if it's successful, to rise above a critical mass, a penetration.
And what's interesting about the hybrids taking off is you've now introduced electric motors to the automobile industry. It's the first radical change in automobile technology in 100 years.