alt Hacker NewsBut that would accelerate the vehicle's depreciation, which is costly. I suspect it would make more financial sense to have a home battery, they should have compared the prices of home batteries vs car batteries. And for the national grid effects, just charging your vehicle when electricity prices are the lowest would have mostly the same effect but would be a lot simpler.
If there is a net benefit for both the vehicle owner and the utility, the utility should pay the owner. A school district bought battery electric school buses with a subsidy from the utility on the purchase price.