Carbon dioxide paint/rust removal???

[68gmsee]

Has anyone tried this method of removing paint, rust and or cleaning the engine or know anyone that's done it?

I saw a special on tv the other day explaining how it works. Seemed to be a good way to remove paint without doing any damage to the metal. The only thing is I don't know how it compares in cost to the most common methods like sand/media blasting.

Here's a study done by the military:

http://www.jdmag.wpafb.af.mil/carbon%20dioxide.pdf