Anyone looking for a new Off Road Trailer needs to visit Missouri Great Dane Trailers.  They have a variety of cargo and utility trailers to chose from, along with parts and service to repair your old one.  I came across a trailer with a built in living quarters, which would be so awesome.  Its called the Get Away III.  This trailer comes with custom oak cabinets, a shower and toilet, and brand name appliances.  You can get a transport kit made especially for dirtbikes, atvs, and carts.  They have several options you can pick from and if you are looking for something just a little bigger they have it all.