At 72, Bette Presley designed a 166-square-foot mobile cabin that is equipped with solar panels for off-the-grid living.
The working grandmothers, known as the Sausage Nonnas, use their tiny homes to travel the country and cook meals for Sausage Sundays.
Watch Shirley Louiselle talk about the tiny home her grandson built for her and how it sparked his new business.