Earlier quoted context omitted.
I apologize if this is a silly question but is that currently mandated or is this something that will likely be mandated when the EVs become dominant? My impression was that they are currently relatively silent but that might just because they are always in proximity to a combustion engine idling next to them.
Currently mandated - newer electric cars make this noise that I would put somewhere between "future theremin"[1] and "terrifying alien chorus."[2] [1] https://www.youtube.com/watch?v=6Qe1wuDsXVk [2] https://www.youtube.com/watch?v=SvX7NnlhiOE Bonus: Kia's sounds like an ambient synth track: https://www.youtube.com/watch?v=NdZwVJPN0Ow
https://m.youtube.com/watch?v=Hu_1JM_UiuA
This is because the manufacturer is based in Quebec.