11kwh with 90% efficiency would be about 7-8kwh of charge. That would be great actually. My city garage only has 8kwh and that’s more than enough. I have been using only 3kwh at the beach house (until with change the internal charger dial) and even that is enough. 

All this new tech is really exciting. ICE and hybrid cars are already obsolete today and it is getting worse with every little advance.