I see Grand Challenge not as the end of the robotics adventure we're on: it's almost like the beginning.

In 2003, my mom actually gave me a call, which is funny because she works at the European Union in Brussels, Belgium, and let me know that there's a cool competition with robots across the desert. And I thought this was definitely something I wanted to be a part of. This was the first DARPA Grand Challenge.

I think, like all big things, you don't know they're going to be a big thing when you start. You just kind of, like, play because it's fun, and it's interesting, and then it turns out to be way more important than you expected.

When you are Uber, what we care about is the customer experience of getting somebody safely, cheaply, efficiently and reliably from where they are to where they want to go.