let me ask all of you to give a warm welcome to chris urmson. [applause] chris, thank you so much were being here in l.a.. take us back. 10 years ago, you were here for the darpa challenge. was?the audience what that >> sure. thank you very much. for the imitation and to the mayor's office for hosting us. it is not clear if i will be able to get my head through the door after all that. 10 years ago, even longer, 14 years ago, the idea was to drive a car from los angeles to las vegas across the desert, without , without a midget hiding inside. help menwas, can we and women that are in harms way drive supply convoys in dangerous parts of the world. it was announced as the grand challenge. no one believed we could do it in a timeframe that was meaningful. we went out for the first challenge. it was about 150 miles. the team i was the technical director for got stuck, burst into flames, and that was it. then, we drove into three fence post. it was an awesome day. hourd drive 40 miles an across the desert, with nobody on board. the media said, this is