Chemical Batteries like lead acid, gel deep cycle and even the lithium have life times that are short by a cars lifetime definition. They are heavy; they are a problem in an accident; Disposal is a problem. Chemical storage is bay far the best way to store the energy for a car. What’s wrong with a nuclear power plant producing hydrogen to fuel our cars with, and hydrogen stations with “Spare” tanks that a re a universal size and shape (Vehicles could use one or more, i.e. bigger vehicles four or six, etc) We can then drive cross country, stopping for refills as we do now, and we can not pollute (Fusion reactors can eat the waste of Fission reactors, so no waste to bury.) no pollution, no oil from Saudis what’s the down side?
Oh, the oil companies stocks would drop like a stone and these reactors would be terrorist target.