And that is why electric cars are for the rich. Batteries will be destroyed by the time they reach 3rd (or more hand).Car batteries have a finite charge cycle life span.
I suspect that having the grid siphon off and replenish your cars power, multiple times a day will massively reduce the life of the batteries.
Having your batteries dead in a couple of years would make you unhappy.
These are cars many of us buy due to cost.