Imagine a world of nine billion people with clean water, nutritious food, affordable housing, personalized education, top-tier medical care, and nonpolluting, ubiquitous energy. Building this better world is humanity's grandest challenge.

If you give people unlimited time and money, they'll do things the same old way. But if they have to achieve the goal in a brief time, they'll either give up or try something new.

My goal is there's a new generation of cars. And people can say we're living in a new day and age. A new day and age of cars that are beautiful, affordable, safe, and of course every car gets over 100 mpg, why wouldn't it.

Back in 2007, I had the opportunity to meet Professor Stephen Hawking through the X PRIZE Foundation. In my first conversation with him I learned that he was passionate about flying into space someday.

Technology is a resource-liberating force!

What is grit? Grit is refusing to give up. It's persistence. It's making your own luck.

I get demoralized by organizations that start off with a mission and pull back when they find it's risky.