Your example(s) seem disingenuous. Why would you suddenly need to charge on the way to daycare? What makes you think a battery swap would be remotely near the path to such daycare if swaps are intended for high traffic long distance corridors?
(Ignoring the fact that you can wait in your example. Daycare charges a fee when you're late, they don't throw your kids on the street. "Can't wait" would be something like a heart attackthough you'd probably be best calling the paramedics in such a case).
That's all a distraction from the main point, which I've stated several times, but you seem to have ignored, though your examples support the point. That the occasions you'd really want to pay to swap are rare, which makes battery swapping a low value proposition. Low value for most customer use cases and consequently low value for Tesla to build.
You'd never want to pay for swap. But just because you want free and convenient, doesn't mean you can have it. If swapping is significantly faster than charging, people who might need or want to save time could be willing to pay for it. I mean, what's a toll other than a convenience fee?
The other possibility to consider comes back to a question of Tesla's approach to the technology and how much they'd charge for it. For Superswapping to make sense it just needs to cost Tesla less to build and run the swappers than it would just to build Superchargers.
+ Reduce congestion
+ Reduce charging location footprint (?)
+ Easy battery upgrade and replacement
+ Out-of-car charging (faster?, cheaper?)
+ Asynchronous charging (cheaper?)
+ Large grid-connected battery bank
+ A few more ZEV credits
- Handle payments at swapper?
- More expensive to build (including requiring redundancy to avoid critical failure)
- More expensive to maintain
I think of Superswapping as something that might be a necessity for Tesla, with Tesla approaching it the same way as Supercharging and other things they do, attempting to lower overall costs as much as possible. Then the fee would be set to encourage appropriate use rather than aiming for it to be a profit center with high use.