Range is hypothetical, especially in a real world scenario with both ICE and in particular EV’s, due to the amount of variables that effect range, in comparison to once an ICE s at operating temperature and not to forget the speed the vehicle is travelling and its effect on mpg/mpkWh, so those 500 miles in reality will be more like 375 in the real world.
What manufacturers should be focusing on imo, is finding a better solution to the large variables in EV range throughout the seasons. and better optimum charging conditions. In reality the rest is soerted with 800v systems.
I think, if manufacturers come up with a battery capable of 350 miles regardless of the temperature, weather or at national speed limit, they would sell themselves.