Also known as Waimea Canyon Drive. Too bad I was in a rented mini-van and not in the Cobra:
It also had switch-back S curves like old Riverside Raceway (think rapid right-left-right-left), and a couple hairpins that would have been fun to drift around.
And here's the view at the end of the road, the Kalalau Lookout over the Na Pali Coast.
-Dean