When I first heard of the new-ish trend where car makers are now playing fake engine noise through the car's speaker system[1], I thought "how stupid and phony". But, the more I think about it, it makes a whole lot of sense. Obnoxious engine noise is mostly for the benefit of vain drivers who need validation--so just play it at the driver, and keep it out of the community environment. It's a win-win. Driver gets to drive around hearing his loud vroom-vroom noises, and the public benefits from the quietness of modern engine design. There's no valid reason to deliberately project your vroom-vroom sounds at everyone else around you when you don't have to.

1: https://motorandwheels.com/cars-with-active-sound-design/