Pretty awesome product. I'll be dropping by a Home Depot to pick it up ($20, $40 for now on Amazon) and trying it out on random household products. Perhaps on an older car too -- if I do that I'll report back here.
If this repels brake dust, it'd be useful on wheels. The current product has a slight haze, so windshield use is out of the question. A transparent product is on the way.
http://www.adweek.com/adfreak/watch-...-so-far-151088