The one thing that I don't see much discussion on now is "
the machines that build the machines". This was 1st mentioned almost 1 year ago in Q3'16 ER call, and Elon mentioned by 2018 the M3 production line will look like Alien Dreadnought. We've seen glimpses of this in the overhead body conveyor in Fremont factory, the robots installing seats and dash on the M3. But I think there are a lot more to this. Think about the 2 automation companies that they bought, the 3x increase in new battery module assembly line design once they realized the external supplier was not working. I think Tesla is just starting out to learn what they can do in production automation, M3 production automation is at the stage that is equivalent of the original Roadster. Imagine what the MS equivalent of the Alien Dreadnought will be in 5 years, or the Roadster #2 equivalent in 10 years.