this piece by Brian Armstrong got a lot of shit, but i think the underlying premise is valid. it is hard enough to try to solve one big problem, let alone to be on the hook for all the other problems plaguing the world
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