The Rams from around 15-20 years ago had the same environmentally friendly rust “protection” system as the Mercedes cars from the early 2000s - those are the S class and C class models you will typically see with bad rust on the door bottoms, rockers, and trunk lids. I believe I read that Ram used the same approach when it was under the Daimler Chrysler umbrella. Another example of well intentioned efforts that yield precisely the opposite of the intended result.