It sounds like more of a distracted driver/pedestrian problem than a noise, or lack thereof, problem. It does raise interesting questions though... i.e. what does "safe driving" look like in a world, maybe 100 years from now, where most, if not all, cars are virtually silent in operation? Hearing is a big part of safe driving, though not completely necessary (we do have deaf drivers on the road, after all, though I'm not sure what replacements, if any, are required for not being able to hear oncoming traffic).
If you're frightened of dying, and you're holding on, you'll see devils tearing your life away. But if you've made your peace, then the devils are really angels, freeing you from the Earth.
