Main issue for cars is the capacity per weight, so it's still a no-go there.

For stationary batteries it's a great technology that will make it easier to disconnect from the power grid.

QuoteAfter 500 charging cycles, it still had more than 70% of its original capacity.

That is pretty bad retention. However, perhaps it will bring back the replaceable battery for devices, or even disposable, since in theory these don't seem (as) toxic.