You mentioned Elon Musk's self-driving (electric) cars, and that you think the problem of automobile transportation has gotten a bit too large for them to be effective (1:53:26). What do you think is the problem, and why is it too massive? I have my own doubts about the future of self-driving cars as the infrastructure change necessary to make it a viable option is rather high even if you were to reduce roadway traffic volume through use of busses and carpool solutions to reduce traffic density. It comes to a point where the population and sheer traffic density makes self-driving cars seem like an economically and logistically infeasible option as a private or public transportation solution, or even a mass-transit solution in general. This might not be the case in other countries, but in the USA this seems especially problematic.
What do you think about automating other forms of transportation? While we might not get total automobile automation, I think we could easily see fully-automated air and seafaring transportation where human crews are eliminated altogether, or at least reduced to a system analyst role. I was wondering what your thoughts are on this.