Logan, you are most correct about the need to have a systemic view of transportation the goes way beyond the single AV, and addresses changes required across infrastructure, regulation and road access pricing. I will be addressing this issue in the concluding post of this series, so stay tuned.
Also, to read a preview of my thoughts on this subject, check out my theinformation op-ed from a few weeks ago: https://www.theinformation.com/why-uber-should-pay-congestion-charges