The Unclviny method:
You will need:
Powdered Laundry soap
Stiff Broom
Water Hose
Beer (for the Broom Operator)
Music (I'm a Classic Rock kind-a-guy)
Procedure:
Turn music up!
Have Beer
Wet down the spot
Put down the Laundry Powder
Have Beer
Scrub, scrub, scrub and then scrub some more
Have Beer
Wash down the spot
Have Beer
Repeat the process if needed, this will create a "clean spot" on the Driveway so do the whole thing (if you have enough Beer).
Vince