Earlier this week Tesla's stock dropped after reliability report was released. Yesterday, there were stories all over the web [re: Tesla self-drive mode endangering passengers]. I'm supposing that following these disturbing reports, fewer people [those who wanted a driverless car] will interested in buying the cars until this issue is fixed. http://www.bbc.co.uk/news/technology-34603364 In their defense Tesla said, drivers shouldn't abdicate driving responsibility. I suppose this isn't going to please investors that much.