Tesla did have quick (90s) battery swap capabilities, but it has been abandoned. I would imagine the logistics of managing the batteries would be a headache considering they degrade with use and represent ~1/3rd of the value of car. My best guess is that it was a precaution in case battery longevity was worse than expected. That, or it was solely a way to get several hundred million in tax credits from California.

If production ever hits a point where it is not battery supply constrained, I could see tesla offering a battery insurance pool system with swapping capabilities, were they pull any pack under ~85% capacity and turn it into a power wall.

https://www.youtube.com/watch?v=S0-sHtlCZ7M

https://insideevs.com/news/329836/tesla-battery-swap-locatio...

https://www.csmonitor.com/Business/In-Gear/2015/0312/Tesla-b...