Noise cancelling in cars isn’t a no brainer I think. When I first got my noise cancelling headphones and had put them to good use on trains and airplanes, I tried to use them while driving in my car as well. I took them off again rather quickly, once I noticed that I actually use the car’s noises as feedback, e.g. for shifting gears, to determine road conditions, and other things. So with noise cancelling active I felt that part of my sensorium was cut off. It will take replacing those observations by ear for ones by other senses, actively rewiring entrained behaviour. For passengers it’s likely a different thing.