Cars are parked for approximately 100% of the time they're not being driven. For typical vehicle owners (insomniac driving fanatics and corporate "fleet vehicle

Cars are parked for approximately 100% of the time they're not being driven. For typical vehicle owners (insomniac driving fanatics and corporate "fleet vehicles" excepted), that's much more than 4-6 hours per day. So no: we do not need 200kW HVDC chargers on every city street. What we do need is ubiquitous Level 2 (240V AC) charging present at the locations where most drivers store their cars. For drivers who store their cars on public city streets, that means installing new cable runs and charging poles. Obviously this infrastructure isn't going to be "free", but it's not some kind of intractable technical challenge. Moreover it will eventually pay for itself through a modest surcharge on the electricity consumers use for charging.