Elon knows what he is doing. Zip2, Paypal, SpaceX, Tesla, and others have all been successful projects. Tesla will just need more time, as it relies on society a bit more than the rest of the stated companies.

Anybody seen iRobot with Will Smith? There is a very nice contrast between humans and robots, highlighting that robots can't write a symphony or draw Mona Lisa, also stating that neither can majority of humans. Really though provoking.