This summer I was bicycling for a while behind two (combustion engine) BMW touring motorbikes, and they were so quiet I think my clunker bicycle may have been t

This summer I was bicycling for a while behind two (combustion engine) BMW touring motorbikes, and they were so quiet I think my clunker bicycle may have been the noisier of the three. I thought about thanking the riders, it really makes a big difference in the city.