...faster charging speeds...
Science
How does one pump that many kWh through the existing grid without blaclouts all around the charging station....
Agreed. Though charging speed is kW (without the h), your point is valid. If a lot of people adopted EV's there'd be a huge drain on the grid ... and the grid in many places already needs updating anyway.
Home charging may be different, I don't know. Since EV owners have an incentive to charge at night (reducing wear on the battery by having it charged to 80% at the time you're about to leave the next morning), and some power utilities offer a discounted rate to encourage grid use in low demand hours (i.e. 9 PM to 5 AM), then maybe having some people switch to EV's doesn't tax the grid.
Few people do like I've done and have a lot of solar at home for mostly free power, including charging the EV. But I live in a climate that's good for that. Plus, my wife and I usually get home in the EV during the middle of the day (when the sun is up) instead of later at night when the sun is down (i.e. work commuters). So a solar / EV combo isn't conducive to most people's use. That's why I hate it when the Dims promote it like it's a one-size-fits-all plan.