I'm struggling to understand what problem this helps solve. VW charging robots seem overly complicated -- I give it very limited odds of rolling out beyond a demonstration site or two.
Having driven an EV for over 6.5 years and over 100k miles, charging is not a problem. Most charging is done at home -- in my case over 80% of my charging has been at home (which is on the low side -- but only since we've taken so many road trips). Tesla's Supercharger model works very well for road trips -- and most gaps have been closed. Many hotels have added charging which lets you top up overnight -- and they are becoming easier to find (PlugShare has a good search filter). For rural charging, RV parks help fill gaps (and any equipped with a 50A outlet can be used to charge a Tesla at over 30 miles of charge per hour). Even plugging in at a regular 120V outlet can add range in an emergency (albeit slowly -- but overnight can add ~30ish miles, which should be enough to get to a faster charger)...
The only charging problem is in larger cities where people park on the street and don't have access to an outlet. I don't see how VW's robot charging battery delivery really helps in this situation. Better solutions are to make chargers avail on street parking. I've seen that in multiple cities in Europe, and LA has started adding chargers to street lamps --
https://bsl.lacity.org/smartcity-ev-charging.html
Another potential solution is workplace charging -- my employer has it at some sites (although not at my office due to a weird thing with our county-owned garage that used federal funds to put in dedicated spots for carpoolers, but no dedicated EV spots...).