I put in a 50amp circuit and a level 2 charger for a little over $1000 back in 2021. We have a plug-in hybrid which has a much smaller battery than a fully electric vehicle. It takes about 2 hours to charge fully, and I get 31 miles on electric before the gas engine takes over.
Since most of our in city appointments are completed within 31 miles, it’s easy to run errands, attend appointments, etc. and keep the battery charged between them if I have to return home.
The gas engine kicks in if we need it so there’s no range anxiety, and it doesn’t have to operating where it’s not as efficient — in slower stop-and-go city/suburban driving.
The company I bought my unit from (Grizzl-E) does sell a unit with two charging connectors. It will use up to the recommend amp rating of the circuit but will split the load if two vehicles are connected.
Personally I like the plug-in hybrid vehicles. You get the best of both worlds — electric for slower in town driving and gas for long trips. Plus charging time is much quicker due to the smaller batteries.
Too bad the industry isn’t moving in that direction as you could build 2-4 plug-in hybrids for the battery requirements of a single fully electric vehicle.