I used ICE on my car about a month ago, and I must say, it works GREAT. It was a little hard to buff off on the hood, but that's only because it was the first part I did and I applied too much of it. I also applied to to the plastic trim and such, and it really does make it black again. I have some comparison pics somewhere... Ah, found them.
Before:
After:
Also, it gives a pretty good gloss, considering I have black paint that's desperately in need of claying.