[David]

Batteries will get cheaper in the next few years and they're not worthless once they can only hold 70-80% of their original charge they just become too heavy for a vehicle. They can still be used to store power in a stationary environment so the batteries can be placed in large groups to help smooth wind or solar power that's a bit unpredictable.

The big plus is they're charged from hydrocarbons that are almost 100% locally produced so the money's not going to sponsor mideast terrorists.