I just picked up my black w/nav MDX about 1 hour ago. At the finance signing the finance person attempted to sell the extended warranty (I declined) and this leather and paint protection ($395). "You'll never have to wax the car again". It included a cream of sorts that should be applied to the finish and washed every 6 months I believe. Does this work well. Name of product is Auto Armor. I told her I'd let her know. Any thoughts?