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The first EV with a lithium-free sodium battery hits the road in January
(www.engadget.com)
This is a most excellent place for technology news and articles.
Any new battery technology news needs to be taken with a grain of salt. They are highly likely over-hyped and the actually realized products will have more problems than the current established tech initially.
Normally you're right. It seems like every day there is a new revolutionary battery tech with no real estimate when it'll ever be in use. But in this case, according to the article, deliveries will start next month which means they're already in production.