Watched a bunch of YouTubes on this product.  For exterior finish.  I diligently Carnuba Wax my Vanagon about twice a year, and store in garage in San Diego.  Yes....looks marvelous.  But maybe a better way?  Super thin application and wipeoff seems to be the trick.  My Uncle is a car finish fanatic; he recommended this to me about 8 years ago.  I never tried.  Anybody tried?