It seems that Tesla Motors shares have begun trading on a members-only market called "SharesPost" for $10.00 per share.
http://www.mercurynews.com/business/ci_12596601?nclick_check=1SharesPost debuted late Monday, coming out of a private beta with an initial transaction of 2,500 shares of Tesla Motors at $10 per share. Tesla, dubbed the "poster child of green mobility" on a research report published for SharesPost subscribers, was valued just over $1 billion in the deal.