Prefab is on the rise down under. With tremendous climatic variation and a relatively slow housing market, homebuilders in Australia have more than one challenge to surmount. In these conditions, prefab designers may have the greatest advantage, due to their highly accommodating manufacturing process. One of the leading new Australian designers, Andrew Maynard, puts it simply: "How can the housing industry make exciting, well designed and cheap housing? Easy, mimic the car industry." Like...