You can read a bit more about what Elon said today at the South By Southwest Conference in Austin, Texas. His comments were about all of his endeavors, and lkely, a video of he keynote will eventually be available. I watched the video stream and found it to be fascinating (and quite long). http://www.latimes.com/business/technology/la-fi-tn-sxsw-elon-musk-20130309,0,1414317.story