Silent Merc, holy e-car... Mflllwhmmmp! What is that terrible sound?

'There is no e-sound. It has to be invented'
Now that electric cars officially sound as silent as a character from A Quiet Place in slippers walking on eggshell foam behind an office partition lined with blankets, makers of the post-petrol vehicles have been thinking up ways to ensure zombie pedestrians can hear them coming.…