*This will not happen Scenario*
I would ask this (also). What if the EPA decided that it no longer was going to use the "5 cycle" test and required all EV makers to use the "2 cycle" test and republish their results (which would seemingly only impact Telsa and Lucid).
Currently:
On the "5 cycle test" the Air pure on 19" wheels would get 406 miles.
On the "2 cycle test" the Air pure on 19" wheels would get 325 miles (I'm taking a guess here that the hit would be about 20%).
(Now the totally guessing part here)
In real world driving, people find they are missing the target "5 cycle test number" by 15%, thus they don't see 406 miles, but are seeing 345 miles.
In real world driving, people find they are exceeding the target "2 cycle test number" by 6%, thus they exceed 325 miles, and are seeing 345 miles.
In the end of the day - the actual mileage observed is identical (as well it should be), but for the "5 cycle" EPA test, it overestimates the real world driving of the "normal" driver and would be more akin to what a very efficient "hyper miler" can achieve. In other words, the 406 miles is what you can do if you take steps to try to maximize range (such as decreasing your top speed, keeping a longer distance between your vehicle and the one in front of you (tailgating) to avoid accelerating, anticipating stops in traffic or lights by looking well ahead of you, taking steps to keep the car cool on warm days and warm on cool days, to minimize HVAC usage. Using heated/cooled seats instead of heating or A/C when possible. Etc etc etc.
We've seen that GWEC (sp) can get great range/efficiency from her car that others can't. Likely she employs many of these steps without consciously doing it anymore.
Would this impact your decision if you knew that the 406 is just an EPA value and that your value will be lower? And if 345 miles of real world range isn't enough, what vehicle would you switch to that will deliver this range? Or is it just a cost thing (like it is for me with the GT, can't justify another $30K for 50-100 miles of range vs the "rest of the pack". And, will you be happy with an Audi, Kia, Hyundai, VW that gets you real world range of 250-270 miles vs 330-340 miles of real world range? <summer time only>