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Sodium ion batteries are actually currently in production, and are in production vehicles by catl and other companies. There is an American and European company also commercializing the technology.
They are offering roughly 3,000 charge-discharge cycles, which is on par with lfp.
Battery technology for electric vehicles is moving super fast right now.
https://electrek.co/2023/12/27/volkswagen-backed-ev-maker-first-sodium-ion-battery-electric-car/