If you use 230 V instead of 110 V, and three-phase instead of split-phase, the lowest charging tier becomes 3 kW (instead of 110 V @ 15 A = something like 1.5 k

If you use 230 V instead of 110 V, and three-phase instead of split-phase, the lowest charging tier becomes 3 kW (instead of 110 V @ 15 A = something like 1.5 kW), and pretty much anyone who has a car hole can easily install a 11 or 22 kW charger. This might make a pretty big difference in the end for all the house-owning people. The American decision to use intentionally limited, low-tier electricity grids as a cudgel to enforce zoning shows yet another facet of externalities.