I don't think it's a good idea to plan to sell a company.

I think that's the single best piece of advice: constantly think about how you could be doing things better and questioning yourself.

Well, my motivation behind Tesla is really to do as much good as possible for the environment and the electric-vehicle revolution. I think there is still a lot of work to do and if we were to sell to a big company, I'm not sure it would progress at the same pace.

I don't create companies for the sake of creating companies, but to get things done.

My vision is for a fully reusable rocket transport system between Earth and Mars that is able to re-fuel on Mars - this is very important - so you don't have to carry the return fuel when you go there.

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

I'm increasingly inclined to think there should be some regulatory oversight, maybe at the national and international level just to make sure that we don't do something very foolish.