Automotive innocence

For me it's a subconscious listening. I do not drive with the radio on. I am listening to the car an the sound around it but once again it's subconscious until it's not.
Once it becomes a conscious thing then I am zoomed in diagnosing what I'm hearing and deciding what to do about it.
One thing I noticed with my vehicles gas-powered or diesel-powered especially when I was pulling horses across country there is a certain RPM or mile-per-hour were everything is in harmony. The ride of the vehicle the drone of the road just a general feeling that everything is right.