The vast majority of the contiguous United States is decidedly not "on the table" as of now.
"The contiguous United States" is still a decade (or more) away. It may literally never happen.
So the vast majority of the US has either significantly worse weather than SF, or a significantly harder ODD than SF?
Could you elaborate on that?
Regarding the weather, lots of people have mentioned snow, but much of the Midwest, Northeast, and especially the South can have sudden torrential rain. I haven't researched it but I would guess that a Florida rainstorm would be hard for both radar and visual guidance. I predict their next city will be Orlando, in partnership with Disney. Then somewhere like Boston (harder - older street pattern and more snow) or Philadelphia (easier). Each of those 3 would "unlock" new territory they can cover. I predict that NYC will be one of the last areas "unlocked".
I didn't make any statements about SF traffic or weather.
The fact that the +1 is a city as complex as SF is a really good sign as well. If they can handle SF, they can handle Charlotte, Atlanta, LA, and many other major metros just as "easily".
I'm a lot more optimistic for their rollout now.
SF does not. Also it looks like it almost never rains in Chandler.
we won't have all-weather reliable level 4/5 until an onboard computer has the equivalent power of a human brain