So what's new ?
I was walking through Girona (Catalunia) today when a woman went past me at warp factor five on a soundless scooter, about Vespa size.
On the side it had "ELECTRIC BIKE COMPANY".
It made me realise that mixing these silent devices and pedestrians in the same area may not be a good thing. So lets have a Harley Davidson sound effects chip in the motorbikes & scooters, and maybe a nice 427 V-8 recording in the SMART cars.......just to keep us walkers on our toes.