Feel Good Hit of the Summer by Queens of the Stone Age

Its got a good forceful beat, and even though it is mostly about illegal drugs one can't help but love it.

All Along the Watchtower by Bob Dylan

I just likes me a good harmonica solo or two.

Freestyler by Bomfunk Mc's

It's a bad-ass song. Finnish robot hip hop ftw! It has a great beat for keeping you awake once you've reached the wee hours of your road trip.