20 gallons of gas still only takes 5 minutes to fill. If I can get 125 KwH in 30 minutes with your v3 charging that's still a 6x multiplier, not really something you can ignore.
Now you need bigger charging stations because people are spending longer at the pump or else you'll have longer lines. Adding to that, I sure as hell am not spending half an hour at a pump on an already long road trip.
The lack of population density in the US, especially in the middle of the country, makes electric vehicles not a great choice for many people. I'm guessing this is why we see higher adoption in Europe on a consumer and infrastructure level.
I live in Iowa. It's about as "middle-of-the-country" as it gets. Lines at charger stations are really a California problem as of now. I have never encountered it driving throughout the midwest and I have gone on some long road-trips.
As for taking 30 minutes to charge, what people usually do is to make sure their charging stops line up with food/bathroom breaks. Realistically, if I drive 10-12 hours in a day, I would stop about 3-4 times for food/bathroom breaks, if not more. This lines up perfectly with the range in my Model 3 AWD. In many cases, I have ended up having to get up and go get my car to avoid idle-rates because it finished charging while we were still eating.
On these trips, I usually pick a hotel/B&B with destination charging so that I can get going in the morning the next day with a full battery.
The "6x" is a number to ignore, because it's focused on one tiny part of the trip. If you can drive all day long with 1 stop, then the extra 25 minutes only makes you a few percent slower.
Now you need bigger charging stations because people are spending longer at the pump or else you'll have longer lines. Adding to that, I sure as hell am not spending half an hour at a pump on an already long road trip.
The lack of population density in the US, especially in the middle of the country, makes electric vehicles not a great choice for many people. I'm guessing this is why we see higher adoption in Europe on a consumer and infrastructure level.