I think you'll be amazed at the maturity we've gotten in the areas of hardware, battery life and software.
There's 20 companies that I have investments in - some batteries, some solar-thermal, one big nuclear thing. We need hundreds and hundreds of companies like that, so that in a 20-year time frame we really are starting to change the energy infrastructure.
I'm invested in a lot of battery companies - and there's a lot that exists I'm not in.