In the first place, why is it any concern of a neighbor what he's living in? IF he's being quiet, minding his own business, and not being a DUmbass, the neighbor needs to STFU. You would think either the owner of the trailer, or the property owner of where the trailer is parked would have the final say.
Apparently, leftycoastnumbers is a flaming DUmbass, and BOTH the trailer's owner and the neighbor want him gone. The owner of the trailer will probably have to scrap it.