Electric cars have to make noise on purpose because otherwise it would be a silent car.
And most of these noises are are weird futuristic WEEEE-00000 UFO sounds.
Therefore I posit that we should be able to change the noises our electric cars make
EDIT: These suggestions are Top-Notch! Keep em coming!
I love this idea. It would also be a lot of fun to load in niche locomotive sounds and see the secret train nerds light up when they hear a DC-10 or whatever