How loud does an electric bike need to be? I understand that they need to make some noise for safety purposes, (loud pipes saving lives and all). But how much noise and at what speed? Is there a top speed where the noise of an electric equals that of a combustion engine as there is with cars? And now the big Q.. for arguments sake. Do loud pipes save lives? Would you whiz along silently at 75 mph on the highway comfortably knowing that you cannot be heard by nearby motorists and pedestrians? Or scarier yet, at 25 mph through a school zone? Just askin'