[_ea1k]

It is a bit different from the rocket equation. The impact of weight on energy consumed per mile in a car is not particularly large. You can add hundreds of pounds and the impact will be negligible.

[adrianN]

At least if you have regenerative brakes. Otherwise weight matters in stop and go traffic quite a bit.

[fragmede]

Are there any EVs without regenerative brakes? As soon as that technology matured, given how much geopolitics is about energy, it's surprising to me we didn't mandate it's usage.

[_ea1k]

With EVs, they all have regen, but also, efficiency for range purposes primarily matters at highway speeds. There isn't a lot of stop and go there.