Quoting Elon here: "Am a fan of Larry, Sergey & Google in general, but self-driving cars comments to Bloomberg were just off-the-cuff. No big announcement here"
That's a nice bit of marketing by Elon, changing the conversation from auto-drive to autopilot. Kinda shows how clueless google is about it's own marketing.
http://twitter.com/elonmusk/status/331797405840338944