"amps from the mains" (?)
The amps referred to in the original article aren't mains voltage amps. Electric vehicle batteries tend not to operate at mains voltages either. But that's not really the point.
Once electric vehicle chargers get much above 7kW output you don't necessarily connect them via domestic-style 240v mains. No problem, the next stage is three phase at 240V/440v, and beyond that for larger commercial EV chargers (at workplaces, shops, etc, and even for new residential developments) there's always the 3phase 11kV network to supply the chargers..
Not rocket science. See e.g.
https://www.zap-map.com/charge-points/ (relates geographically to the UK but the technologies don't vary much by country)
Biting the hand that feeds IT
