Here's the second part of Elon Musk master plan, with what I'm interpreting as a subtle nod to the amazing film, "Hot Shots, Part Deux".

So, in short, Master Plan, Part Deux is:

Create stunning solar roofs with seamlessly integrated battery storage
Expand the electric vehicle product line to address all major segments
Develop a self-driving capability that is 10X safer than manual via massive fleet learning
Enable your car to make money for you when you aren't using it