Don't laugh too hard. I think it was some Euroweenie place or somewhere that actually passed legislation stating that electric vehicles HAD to make some sound, because they are too quiet and people could walk out in front of them not knowing they were there. They had them retro some sort of sound device on them for that reason.
(Never mind looking up from your f....,.g phone once in a while you Gen Z Gen D.)
Next you'll have to have some sort of smoke can on them so people can smell them too and know they are there, and they'll sell little bottles of kerosene to fill it. It'll come with a 50 dollar price tag to combat global warming.
Aaron