The main obstacle is battery swap is capex heavy, hence PRC might do it, but most other places, less likely. It's pretty easy to extrapolate PRC auto parking / self driving cars sneaking out during low congestion to hit their battery swap queue. But that is a fairly significant logistics / infra issue when most countries would be lucky to get sufficient fast charging piles in place. Battery volume is probably not an issue since batteries will be rentals for minimum XYZ capacity. And algo might eventually bid for price, i.e. discount rental for partial charge if it means your car go for a swap by itself a couple days earlier.
i always carry it on pendrive with encrypted partition, and encryption software is also natively installed on usb, so no use of host pc for anything, mail or decryption