I'm not sure they would work well if you're listening to loud music or something. Personally, I don't think I'd ever buy a car that uses voice control as its primary interface; I greatly prefer physical buttons.
It actually does work on my Polestar even when music is played, it pause the music while listening. Polestar uses Google voice recognition which is great, but still I hate using it except for rare cases at it is slow and prone to misunderstandings. It is ok-ish for listening to incoming messages though.