Electric cars are quiet. Therefore, no one can hear them coming. Therefore, they are hazardous. So engineers are working to develop artificial sounds for them. Under consideration are chimes, melodies, and a whirring sound.Once all cars are electric, can you imagine the sounds of a busy street? What if the sound is chimes? It would be Edgar Allen Poe all over again: “Oh, the bells, bells, bells, bells, bells, bells, bells.” And then what if all the drivers’ cell phones start ringing?