I am cyclist for whole my life and broke so much bones during that time, most of them with unselfish help of cars ;) There was trucks, vans (worst of all - always in hurry), taxi drivers, family cars, bikers... Everything you can imagine was trying to kill me, but those silent little... those silent electric pieces of ... ehm... are by far most dangerous :)
Maybe we can start petition to put some noise-making-things on them?