Hi rpm,
I think you have it ... so it's called chip seal not tar mac???
I remember my dad having a drive built in the 60's they dug a trench appx 3" deep then put down tar, covered it with a layer of course gravel, more tar and a layer of much finer gravel more tar and a layer of sand. It worked OK, but every year or so a new top layer of sand needed to be added ... and on really hot days the car would leave imprints if you drove on it.
And I was assuming cold rolled asphalt ... few driveways are long enough for the paving layers, no?