I don't understand why this is a concern. In this scheme you swap out batteries instead of re-charging them; you don't own them, you're contracting with a servi

I don't understand why this is a concern. In this scheme you swap out batteries instead of re-charging them; you don't own them, you're contracting with a service to provide them as needed. Theoretically, you could buy the car battery-less and be asked upon purchase which battery service you'd like to sign up with. But batteries are heavy, so quite possible that a battery swap would end up taking as long as supercharger charge anyway.