Rush - The Spirit of Radio
Motorhead - Motorhead
Sanctuary Rig - Spy in the Atmosphere (obviously!)
Hawkwind - Silver Machine
Deep Purple - Highway Star
If i'm on a long drive I'll usually listen to Talk Sport, or LBC or someting like that.
If however, it's an unofficial taxi run then I've got my driving CDs as well.
The whole album "Decksandrumsandrockandroll" by Propellorheads has kept me sane on a few long drives, also "Chips From The Chocolate Fireball" by Dukes Of Stratosphere...and (my favourite album of all time): "Wish You Were Here".