In the February 2012 issue of Southern Living they featured Lake Flato Architects prefab dogtrot houses.
Movable louvered doors in the dogtot or breezeway that connect the living and master bedroom units
The main building includes the kitchen, sitting and dining area on one side with the master bedroom and bath on the other side. The dogtrot or breezeway connects the two units, as seen below.
The guest unit has two bedrooms and a bath.
All photos from here
Photos: Laurey W. Glenn