I think
@narf ran the numbers on this a couple of years ago and it actually isn’t as bad as you think. IIRC the main reason is that when you aren’t moving there is no “idling” in an EV so all it does is run A/C
Yup.
In an ICE car, going very slow is hugely inefficient in terms of mpg because the ICE has significant overhead at very low power outputs.
In an electric car, no matter if BEV or FCEV, going very slow is highly efficient because the electric motor is very efficient at low power outputs.
For the driving part alone, slow traffic should increase your range in the electric car because of less aero, but decrease your range in the ICE car.
For AC while standing, the ICE has to run to deliver those 1-2kW for the compressor - maybe 1-2l/h, depending on your engine. For reference, the Beetle idled at about 0.6l/h when warm with the AC off, so a slightly bigger engine and AC load will be more. That will drain a 50l tank in 25-50h.
Take your 55-75kWh Model 3 battery, the AC compressor should drain it in 27.5-75h - pretty much the same time.
In other words, if those numbers were accurate then running the AC for an hour long commute would drain 1/75 to 1/25.5 of your range. More than zero, but hardly a problem.
Cold weather will be a bigger factor.
Obviously, the numbers may not be exactly accurate, but the overall ballpark will be. Prove me wrong.