This is not a legitimate "record" on EV efficiency as the circumstances convolute driving efficiency and elevation change without any quantification. As it stands, it is totally meaningless, hence the skepticisms by some of us.
As a comparison, in 2019, a Virgin Atlantic 787 set a "speed record" of 801mph over Pennsylvania.
https://www.thetravel.com/jet-stream-propels-record-breaking-l-a-to-london-flight-to-801-mph/). 801mph would have broken the sound barrier, i.e., supersonic flight. The 787 was/is not capable of doing that without disintegrating! It was actually riding an unusually fast jet-stream flying at sub-sonic speeds (mph with respect to the jet stream) but, @801mph when references to the ground speed. Max speed for the 787 is ~Mach 0.9. In reality, no real performance benchmark was broken. Simply, it was a sleight-of-hand by quoting the exaggerated frame-of-reference (ground-speed vs air-speed). This is the stuff students should have learned in high school.
I think the aforementioned "record" for the Lucid range is bogus and misleading. It is good for a laugh, that's all!