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CATL first uses for the tech are literally car batteries. Your info looks to be outdated. The energy density of these new sodium batteries is apparently just 5% less than current lithium batteries used in electric cars.
The platform is called naxtra. They are also using it in their mixed battery car batteries called Freevoy that are primarily sodium, but also lithium.
The link above is the transcript of the posted video. It covers both electric car platforms.
Yes, outdated info then.
Edit: sounds pretty magical that they're significantly improved in nearly every way. 10x cheaper, over twice the charge cycles, more temperature tolerant, and only slightly less capacity.
It'll be interesting to see if they can really deliver all this.