Other than listening to a good audio book or a podcast that educates you, TURN THE RADIO OFF.
Look, I love music as much as the next guy, its feeds a need in my soul, but when you are in the car for 20-30 minutes, or longer, turn the radio off and see what happens.
Think, dream, pray and you will find that you will get a clarity and perspective on life that cannot be acheived otherwise.
Technology, kids, pop ins in your office and everything else, it is nearly impossible to escape some type of distraction every moment of the day. But in the car, when you are alone, shut the radio off and listen to yourself. You will find that you will get to a mental place that helps you lead a good meeting, deepen your relationship with God or start taking mental action on that billion dollar idea that has been on the shelf.
Tomorrow, turn it OFF and see what happens.