If ya wanna go old school country-rock.. gotta go with the creator of it all... Mr. Gram Parsons.. I believe he called it Cosmic American Music... definitely check him out.. songs like:
6 days on the road
Return of the grievous angel
pretty much anything you can find
as for 80's rock... you can never go wrong with REM, Talking Heads, The Pixies, or AC/DC
If you want some more newer 90's kinda stuff... The Breeders' "Drivin' on 9" is a good warm up, cool down kinda song... For Sprints and stuff I like to use Almost anytihng by the Foo Fighters.. especially "Monkey Wrench".
Let us know what you decide on for you ultimate Mix Tape
Jeff