I’m often stupid, but usually not on purpose. What’s your point?

In an ICE powered car, running the heater doesn't have the same effect on range. Because an ICE is hot due to how it works, sending hot air to the car's interior is basically free because the heater uses waste heat from the engine.

We're talking about the seat heaters though. I'm pretty sure heated seats use resistive heaters and not waste heat from the engine