The second step in the Mirror process, again using specialized buffing bonnets and techniques, heats the paint causing the surface layer to reflow and seal itself, producing the unique finish that leaves no residue or coating to wear off.
So what is it? Is it a scam? Is it any different than a good polish, seal, and wax? My gut tells me it's a scam. I'm not considering it, but a friend is. He was quoted $200 to do this "special" three part treatment.
Some Links:
Ming Mirror Finish
Finally photos of my M35 w/ Ming Mirror Finish : Infiniti M35, M37, M45, and M56 Forums