Favoured firms will be invited to follow the car makers as they expand into new markets, such as China, India or Brazil, setting up parts plantsin the shadow of the new assembly lines, and taking over design work too.
And Jon Naar, author of "Design for A Livable Planet, " suggests that 15 to 20 plants are enough to clean the air in a 1, 500 square foot office area (139 square meters).