It is currently possible to drive an EV coast to coast using the interstates, has been for a couple years.
67% of people in the US live in single family homes. They will do the vast majority of charging at their home. I only ever user public chargers when on a road trip.
For multi unit dwellings there are already charging units that power share a single 220 circuit. 2-10 chargers per circuit. Since the majority of level 1 or 2 charging occurs overnight it actually works out well. Everyone wakes up to a full car, everyday.
As for time spent charging on a trip, depends on your driving style. My trips from Atlanta to Orlando have exactly 0 minutes added due to charging. In the past and the present we time the trip so that we eat on the way. Now we just make sure to pick a spot with a nearby DCFC station and eat while charging. For the second stop we do our shopping for the meals we plan to eat in the condo. Again we pick a stop with a DCFC and shop while charging. The net result is exactly 0 minutes difference between a trip in an ICE and a trip in an EV for my driving style.
As for large charging stations....the US is really lagging behind the rest of the world. Isn't that how it usually works? We lag way behind, finally get drug into the future and then catch up. I have yet to arrive at a DCFC station and had to wait. The US government has allocated $7.5 billion to expand the current DCFC network. Each state has submitted a plan to the Feds to get their portion of that money. The plans have to spell out stations every 50 miles along major travel corridors with a minimum of 4 chargers at each station. Here is Georgia's plan.
https://nevi-gdot.hub.arcgis.com/
Here is the future of charging that will one day come to the US when it is drug kicking and screaming into the future.
And here is a Baltimore to Orlando trip in my Mach e. I for one would not drive that far, I would fly.
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A lot of very smart people have spent a lot of time and money thinking about the issue and providing solutions.