Yeah, you do find yourself zoning out more frequently. I would definitely recommend it with books you don't care too much about. I also discovered that listening to podcasts is aewsome for roadtrips, I don't know why I never thought of it before. My mom's friend burned some This American Life segments and those were pretty good to listen to. I never listened to podcasts much, but after that I went looking for some and now try to find episodes that would be good to listen to on a trip.
But they do help time go by faster. We drive to my grandma's about 2 or 3 times a year, and it's a 6 and a half hour drive, which gets quite tedious. One time we drove up but my mom's stereo was broken, so we had SILENCE and TALKING the entire drive, both ways. It wasn't too bad, my mom and I get along, but about 3 of those hours consisted of my mom complaining about every person at her work.
Anyways yeah, if you have a long drive, 2+ hours, try an audiobook. Or try to find radio plays like War of the Worlds or Hitchhiker's Guide or whatnot. I have a cassette tape series of The Lord of the Rings that's acted out like a play (instead of just reading the book). It's interesting.
yes coulombs are "germaine", did you learn that word at talk like a dick school?