I would think that if this is indeed the first battery swap station, it is going to be more of a proof of concept than anything else. If they have perfected the swapping hardware in the lab to the greatest extent possible, the next thing you would do is roll it out into a single location and allow limited use to see what kind of problems crop up so that you can fine tune things later. That car wash is not that large of a building really, and Tesla battery packs are pretty substantial. From what I have seen so far, I'm having trouble imagining how they would store hundreds of packs in an automated manner. Think about how much room that is underground. I'll bet you that they only allow for "back and forth" swaps too. Meaning, that on the way back you have to have your original pack re-installed. That will keep the logistics reasonable to start off, no battery packs wandering off to who knows where (well, Tesla knows...). I could also see them possibly rolling out new packs to those that want them, but the pricing on that is going to be pretty complicated.
There is obviously a sizable market for people driving between LA and SF who are: 1) in a hurry, 2) drive Teslas, and 3) would pay extra $$$ to save time. Best corridor to test this out in for sure. Once open, I will be very curious to see how it works out, both technically and from a business standpoint. Maybe they are trying to get it open before the end of the year?
RT