SanDisk SlotRadio Giveaway - What's Your Essential Road Trip Song?

We're in the middle of summer, and many of you are packing up the metaphorical Family Truckster for your metaphorical Trip To WallyWorld. Our sponsors, the good folks at SanDisk, have sent us another SlotRadio digital music player to give to One Worthy Winner.

So in the spirit of The Great Summer Road Trip, we want to know - what is THE most essential road trip song, the one that no long distance car drive should be without? Give us your answer in the Comments section - tell us the song, and why no road trip soundtrack should be without it. The deadline is this Friday at 9:00 a.m. PST; we'll announce the winner on Friday afternoon.

AND THE SLOTRADIO GOES TO...

Alyce. Simply because as weird as it sounds, the title/main theme of "The Mission" score is great driving music.

(Also, I can't believe that no one picked my favorite road trip song - Steppenwolf's "Born To Be Wild", the theme song to perhaps the two greatest road trip movies ever.)