What you do while driving

[KKbluff]

40 miles each way for me 5 days a week.
Most of the time I spend thinking about how I hate commuting, but in the windows of free time I do have a few other things to take my time up:
I will talk on my phone (hands free),
listen to my mp3 player via my car stereo,
books on cd are great,
drink water and eat a snack,
turn on the radio and then instantly turn it off because its the same 4 songs over and over and over.

Any other good ideas besides jerking off while driving 75+ mph?