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Sodium batteries will not replace lithium in cars, as the density is too low.
It means the battery weighs more but contains less power.
For an EV, that wouldn’t work, as the heavier the car is, the more power it uses.
With sodium you will probably half the range of the EV, which is already low.
I think the experts who believes in this technology know a bit more than you and me who only read a few wiki pages.
If money is going into this, they also have a believable plan. But big oil certainly want you to think otherwise.