Biofuels such as ethanol require enormous amounts of cropland and end up displacing either food crops or natural wilderness, neither of which is good.

Winning 'Motor Trend' Car of the year is probably the closest thing to winning the Oscar or Emmy of the car industry.

I think Tesla will most likely develop its own autopilot system for the car, as I think it should be camera-based, not Lidar-based. However, it is also possible that we do something jointly with Google.

If we drive down the cost of transportation in space, we can do great things.

I think that's an important thing to do, to really pay attention to negative feedback, and solicit it, particularly from friends. This may sound like simple advice, but hardly anyone does that, and it's incredibly helpful.

I'm reasonably optimistic about the future, especially the future of the United States - for the century, at least.

In order to have your voice be heard in Washington, you have to make some little contribution.