So, at low speeds (when tyre noise isn't noticeable) most EVs add a noise, because in many jurisdictions they're required to do so and there are no jurisdiction

So, at low speeds (when tyre noise isn't noticeable) most EVs add a noise, because in many jurisdictions they're required to do so and there are no jurisdictions where it's illegal for cars to make a noise because historically yeah, they're cars, they make a noise. At higher speeds you can here something moving - there are tyres rolling at high speed over a stone-like surface and that's inherently noisy no matter if there's an engine of any sort.