"BTW, IIRC, there are now places where "super-charges" can be done in 20-30 minutes"
Well, nice. The issue is that if 90% of cars would be electric, all those cars would need an always available overnight charging station, but not all people have their own garages and unless plugs for charging would be available _everywhere_ on the street - so you can plug the car in at every position on your street - this 90% is simply not viable. Even today there are cases where you have to wait for charging stations to become available, and the few stations in malls et al. are i). not enough for the 90% and ii). not an option for those who park on the street - and they make up the most of that 90% -, and iii). they won't be free/cheap anymore when 90% become electric (also, tax breaks will disappear well before that).
Well, all is good, and it's good to know 90% could theoretically become electric today (given the proper infrastructure), it will take a looong time for everything to align just well for that number to become real.
Also, batteries either will become much better by then, or the airlines will be really happy since we'll need to fly+rent for every trip longer than half-a-day (and that's how relaxed roadtrips become airport hassle filled expensive frustrations).