Best Road Trip Songs?

What are the best road trip songs of all time?  What will you listen to when you load up the family truckster and hit the open highway for the holidays this year?  Well, Pioneer announced the results of a nationwide poll last week, and here are their results:

1. Willie Nelson - On the Road Again
2. Steppenwolf - Born to be Wild 
3. Eagles - Take It Easy 
4. Beach Boys - I Get Around 
5. AC/DC - Highway to Hell 
6. Tom Petty - Free Fallin' 
7. The Doors - Riders on the Storm 
8. Kiss - Rock and Roll All Night
9. Bon Jovi - Wanted Dead or Alive
10. Lynyrd Skynyrd - Free Bird

OK, there's some solid stuff on there, but what did they leave off?
Post your suggestions in the comments section