Actually, Tenneco is more or less using the dupont name and teflon product. Im not sure dupont even has a lot to do with the product. But your right, Teflon is useless if applied under about 700 degrees......However, if they patented a fomula for its use in the auto car care industry, my question would be, "WHy WOULDNT you want to use it?" We all know what it did for housewives in the kitchen ! Id be impressed if anyone here didnt have a teflon coated pan in their kitchen right now ! I have just began using their spray wax, on my rv, and am beginning to sample it on my truck....Its very easy to use, wet or dry, and wipes off just as easy. Its a great in between details protective layer.......(Im an anal detailer by the way....)