Cars are isolated? On a regular basis I drive 5 different cars, various makers, I can hear a Harley just fine in either. And from every parked car where a driv

Cars are isolated? On a regular basis I drive 5 different cars, various makers, I can hear a Harley just fine in either. And from every parked car where a driver has a conversation on speakers I can hear it so well they might as well have had it outside of their car. New Teslas, BMWs.