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!
You can do this with any android phone and probably any iphone. My text notification is the “!” Alert noise from Metal Gear Solid.