Electric cars are silent, and that's a problem. Yeah, it's a problem for pedestrians (who can't hear them coming), but it's a real problem for electric car owners, who want their cars to sound like the amount of money that they paid. When Audi's R8 e-tron becomes available, that will be a lot of money, so Audi is inventing a new sound to match.
So, before watching the video below, think about this: if you were to pay slightly less than a bajillion dollars for an electric car that looks more like a spaceship than anything else that you're ever likely to get a license to pilot, what would you want it to sound like? Got it? Cool, now go watch the video.
(Seriously, go watch it, because otherwise you're not going to be able to mentally participate in the next part of this article, and that wouldn't be any fun now, would it?)
Did you watch it? You better have, because that's a damn good sound, if I do say so myself. It's electronicsy but not overly so, and it also sounds like how you'd figure an ion spaceship drive would sound, if ion spaceship drives were to make sounds, which they don't.
Ideally, though, you'd want to have access to the e-tron's sounds for yourself, so that you could tweak them to suit your own personal preferences. You shouldn't be allowed to turn them off (since otherwise those poor pedestrians would be little more than road meat), but you should be able to swap in something as good or better. Maybe not something like this, but definitely something like this.