This is not much power, and all cars support scheduled/delayed overnight charging already. There are cars that support V2G and can be made to even supply power

This is not much power, and all cars support scheduled/delayed overnight charging already. There are cars that support V2G and can be made to even supply power to the grid for that TV pickup peak if necessary. BEVs have batteries large enough that they're fine even if they're not plugged in for several days. Slow AC charging is little more than a kettle + electric oven, and we built the grid for that instead of lamenting it's too much for the grid and people need to continue to use wood stoves. Driving 40 miles (US daily average) uses about 10-12kWh of electricity, and there's whole night to refill that.