Compost in trunk of Mustang

There was no mention of the quality or composition of the compost. Compost creates compost tea which will cause the trunk pan to rust. Vehicle trunks are usually closed off on one side by the seat back of the rear seat which is generally some type of hard cardboard covered in felt or fabric of some sort. The tea may seep into the seat back and might cause mold, and/or pool under the passenger seat and start rusting the floor pan. On the sides of the trunk are generally wells that trap the liquids and eventually rust out (common in cars with leaking trunks). Moisture may also get into the materials covering the rear deck causing mold there also. As the compost heats up it will cause condensation which can get into the electrical connections located in the trunk and cause rust and electrical issues. =o)