3. Why is it more efficient for the work cells to prepare

“ modules” and deliver them to the assembly line than it would be to produce the component (e.g., interior upholstery)

on the line?

Wheeled Coach, based in Winter Park, Florida, is the world’s largest manufacturer of ambulances. Working four 10-hour days each week, 350 employees make only custom-made ambulances;
virtually every vehicle is unique. Wheeled Coach accommodates the marketplace by providing a wide variety of options and an engineering staff accustomed to innovation and custom design.
Continuing growth, which now requires that more than 20 ambulances roll off the assembly line each week, makes process design a continuing challenge. Wheeled Coach’s response has been to build a focused factory: Wheeled Coach builds nothing but ambulances. Within the focused factory, Wheeled Coach established work cells for every major module feeding an assembly line, including aluminum bodies, electrical wiring harnesses, interior cabinets, windows, painting, and upholstery