It's complicated, for sure, and will need changes in the infrastructure. But it has some advantages as well. Imagine 10 000 000 cars with 50 kWh battry capacit

It's complicated, for sure, and will need changes in the infrastructure. But it has some advantages as well. Imagine 10 000 000 cars with 50 kWh battry capacity each connected to the grid and letting 10% of their capacity to be used for balancing of the network. If the grid has excess power - charge to 100%. If the grid lacks power - discharge to 90%. That's 50 GWh of balancing capacity. It basically solves the problems with unpredictability of most of the renewable power sources.