A family of six traded their big 5,000-square-foot home to squeeze into a 250-square foot converted school bus. Gabriel and Debbie Mayes help their kids do homework on TV trays in the living room. In the kitchen, there is a stove and refrigerator under the counter. Finding space for groceries is a challenge. The family admits they live on a half of gallon of milk because anything larger would not fit. Debbie cooks vegetables inside the bus and a main dish is grilled outside.