I wished Tesla would focus more on a full ecosystem for self driving, lighter cars, including better infrastructure, rather than shoehorning their vehicles into the existing system. I just feel that with their current approach, we've ended up with an even heavier, expensive lump of metal for moving a 70kg person from A to B. I do like their product from a "coolness" perspective, but I'm not sure if it's the long term way to go.
Beyond Elon's current initiative with the Boring Company, can you be more specific with examples of what that might look like? Because otherwise, Tesla doesn't really have a choice but to shoehorn into the current multi-trillion dollar transportation network.
I think they need to focus on infrastructure, more than the car. For example, how about installing beacons in catseyes to guide vehicles so the complexity of driving algorithms can be reduced. It just seems like they're trying to solve the self driving problem in the hardest way possible by making a car "see". Also, I don't think the boring company will ever offer the same flexibility in transportation a car will.
For what it's worth, Tesla built a Supercharger network all on their own, instead of shoehorning their way in, like expecting cities and gas stations to add electric charging capability.
As far as the weight, the society would probably benefit from narrower lines and narrower single- (or double-, but in a tandem way) occupant cars, as congested city freeways could essentially double the throughput overnight. The benefit would also extend to any internal-combustion vehicle, so this is not Tesla-exclusive.
