Toyota developing solid state battery for EV's.

They've been releasing press releases like this for a decade, at least, hoping people will wait to buy an EV, as their current offerings are hilariously uncompetitive.

I hope it happens and improves charging, energy density, etc., but I'm not holding my breath. They said ~5 years ago that they'd ALREADY be in production, now.
 
A 500WH solid state lithium battery to power a big drone currently costs $1000. I can't imagine the costs of solid state lithium batteries to power a car yet.
 

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