If you think back to the beginning of cell phones, laptops or really any new technology, it's always expensive.

Yeah, well I think anyone who likes fast cars will love the Tesla. And it has fantastic handling by the way. I mean this car will crush a Porsche on the track, just crush it. So if you like fast cars, you'll love this car. And then oh, by the way, it happens to be electric and it's twice the efficiency of a Prius.

I'm extremely confident that solar will be at least a plurality of power, and most likely a majority... in less than 20 years.

If anyone has a vested interest in space solar power, it would have to be me.

The tough thing is figuring out what questions to ask, but […] once you do that, the rest is really easy.

You have to be pretty driven to make it happen. Otherwise, you will just make yourself miserable.

You could warm Mars up, over time, with greenhouse gases.