If your EV range is 250-400 miles, and DC fast charging continues to expand rapidly (which it is based on both Tesla and other networks deployment rates), you're paying for and dragging a whole bunch of cells needlessly around (not to mention paying financing/capital costs on that unnecessary equipment). Today, you're never more than 100 miles from a DC fast charger [1] [2] [3] with the caveat being northeastern Montana, the Kansas/Oklahoma border, central Nevada (which could be solved withe a station in Ely), and southeastern New Mexico.
Heck, I can hop into my Model S or Model Y today and drive from Central Florida to Acapulco, Mexico, Prince George, BC, or Quebec/Newfoundland, CA. Range is solved, charging infra is the challenge (which is also why the UK phased out EV subsidies to move towards charging infra financial support [4]).
[2] https://supercharge.info/map | https://ibb.co/n8x05j7 (100 mile range circles on North America, red is active, blue is planned, cones are under construction)
[3] https://afdc.energy.gov/fuels/electricity_locations.html#/fi... (Uncheck Level 2 from charger selection to scope only to DC Fast charging)
[4] https://cleantechnica.com/2022/06/16/uk-ending-electric-car-...