People aren't going to have the vehicles charge at 3:00 AM, they don't like managing automatons like that. I grew up in a family where our ISP did something similar and I was the only one who would schedule downloads to start at midnight (including my dad who worked as a software dev at a large tech company.) They'll just suffer whatever consequences of having the thing charge when they plug it in are.
I like electric vehicles, I'm actually in the process of upgrading my boat to use electric propulsion. I think a lot of people overlook many of the downsides though and it's a bit concerning. The battery situation is particularly bad, the used electric vehicle market is going to look very different than the used ICE vehicle market.