Math does not work here: 8h x 2kW = 16kWh. Tesla has 60 or 100 kWh batteries. It only works if you take only short trips (like commuting to work) and never go below 70% of charge.
It works perfectly fine if you plug in every night in your garage and don't drive more than 100km a day. If your commute is longer you might need 3 or 4kW, but probably not 11kW.
And if you take a longer weekend trip you'll need the whole next week to catch-up on charging. 11kW seems like necessity - it allows you to charge 0-100% overnight. No advance planning, no compromises required.
Also, I'm curious: in my country it is pretty common to have 11.5 kWh installation at home (it was even before advent of electric cars), is the US somehow limited in that regard?
American mains are single (split) phase 240v, your country's are likely 3 phase 240v. Your appliances are likely hooked to 3 phases simultaneously with a 20A breaker so they can get 12kW, American 20A hookup is only good for 4 kW (240x20x0.85 because you cannot draw more than 85% of max power continuously by code).
