I see these all around town. Obviously, just *left* wherever the previous "renter" lost interest in continued use (rental).
Presumably, there is a GPS receiver and (cell?) modem in each that lets it phone home to report usage (and "account/billing info") as well as where it presently resides, battery state, etc.
I'm sure there is some sort of mechanism in place to prevent/discourage theft (e.g., by continuing to report its location WHILE it is being "moved without rent").
And, even if you assume they can continue to sit wherever each rider happens to leave them, *someone* has to round them up, periodically, to charge them (I doubt the renters assume that responsibility).
So, it seems like a labor-intensive task (the city limits, here, encompass some ~240 sq mi -- about 5 times that of san francisco or boston... just slightly larger than Chicago) over a widely distributed area.
While battery choice could decrease the frequency of "typical" charge-use cycles, it likely can't avoid them.
I'd imagine any vehicle tasked with retrieving them could support "on vehicle charging" -- so the scooters are charged before arriving at their *intended* destination (?).
I also see some pushback in metro areas from all this "litter".
So, what's the motivation to undertake such an enterprise? Are the rental rates high enough that it looks *attractive*?