I think part of the problem is that car manufacturers do an extremely good job of reducing noise inside the car. When I'm driving my car, I scarcely hear the no

I think part of the problem is that car manufacturers do an extremely good job of reducing noise inside the car. When I'm driving my car, I scarcely hear the noise around me. If I'm running alongside the same street, though, I need noise-cancelling headphones just to hear a podcast. As long as manufacturers can limit the effects of the noise on the driver, there is little incentive for them to limit the noise to the environment in general.