Any idea what it's made of? I wonder if it's more or less toxic than glycol. If it was less toxic and better coolant that would make it pretty attractive. Sounds interesting at any rate, I did a search for it and found this:

http://www.allfordmustangs.com/forums/2005-2010-mustang-gt-tech/120649-fyi-alternative-non-water-corrosion-blocking-coolant-without-replacing-oem-radiator.html

Some good info but it's short on experience.

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1986 300SDL, 362K
1984 300D, 138K