The problem with this scenario comes when a significant number of people have EV's and everyone decides to charge at night when the energy costs and usage is low. Suddenly, energy costs during that time frame will spike, usage will spike and the utility will find itself having to scramble for periods of low usage time to do routine maintenance. No greenie I've ever heard ever acknowledges this simple fact. There is no free lunch.....
I would advise you to never buy an electric vehicle. They are for thinking people.