Roadtrip soundtrack

Admittedly this has nothing to do with the wedding, but it's about both of us so I thought I'd post it here. In 12 days we leave Cleveland, and we'll be taking 10 days to drive to Seattle. While clearly we need to bring more than one album on a trip that long if we are to remain sane, we're thinking of compiling a roadtrip CD or two with appropriate songs. So I'm posting a request for comments: please give us suggestions of songs you would put on such a compilation.

I'll get the ball rolling with a couple of suggestions. Melinda suggested 'Go West' because, well that's what we'll be doing. I was thinking of Led Zepellin's 'Immigrant Song' because of the immortal line We come from the land of the ice and snow, but given the weather we've had lately that's starting to feel ridiculous.

So what would you include?