Big batteries don't charge faster than small ones due to both being different amounts of smaller batteries, at the same time installing quick charging capabilities in domestic garages is complete overkill, over night is perfectly adequate.

There's probably going to be a mix of services: Quick charge ones which just might be done before you're done peeing and looking at sandwiches, where the operator wants you out of the booth as quick as possible so another can come in, and more relaxed road side diner like situations where an hour is perfectly acceptable (well, at least from an European POV), but there's also going to be as many chargers as parking spots.