ahh, electronica, Aphex Twin-esque stuff perchance? Do like a bit of that...
Keep in mind that I do a lot of long distance driving and mostly in the darkness hours, so I like a bit of a 'musical score' to my driving. It lets my mind wander.
If you're looking for Aphex Twin-esque stuff (his Ambient works are excellent along with the Richard D. James album) then find some Gridlock (or Dryft... a variation of), Chris Clark, Polygon Window, Squarepusher, Scanner and of course some Boards of Canada. Just those will get me from coast to coast with no complaints.
For the more up tempo days, its usually Chemical Bros., Dj Keoki, Underworld, Juno Reactor...
My driving music taste differs a lot from my casual listening preferences.
I'm in the process of making a 90s collection of stuff for my road trip in a few weeks, but i don't have the free time i was hoping for. Its a pretty involved task to make an mp3 mix ... ugh..