The problem with a true "Teflon" coating is it has to cure at a very high temp(normally over 400-500F) to bond to the surface. I found this:
http://www.toefco.com/teflon-coatings-on-cars.htm
Which may explain the "Teflon" coating they are talking about. I wouldn't waste my money personally...
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2016 4Runner Tail edition
2020 Camry 2020 RAV4
2013 Chevy 3500 4x4 Duramax
1999 Ford F250 Powerstroke, the tow rig
1969 Mustang, the fast car....(: