holy crap that's expensive! I guess it's regular old antifreeze for me as well.
Although, lately I may call it's name into question: The other day I was getting the wife's car ready for a trip and I had a brand new unopened jug of antifreeze in the trunk. It was FROZEN. It's been a little cool over here in Lexington. 0* this morning.
Nevertheless, the Pontiac will be a "fun" car for nice weather only so it will never see any of this craziness.