This has got to be the best marketing scam I've heard. (z-1/z-2/z-3/z-4/z-5/z-6/z-7/z-8/z-9/ when will they come up with z29 and a half? They have a system that they claim doesn't interact with any other product. (wow, so they can sell more of their stuff) Then they call it a polish to boot. (polish I thought meant no protection, hmmmm, did I miss something here?) If you don't use all their products, they won't guarentee the finish. How can people be so naive? well, I guess they are out there, because the company is making a fortune selling this overpriced stuff. Cruisers make life beautiful.