Being green is hot nowadays. In the car world, that means caring a lot more about how automobiles affect Mother Earth. Naturally, the majority of carmakers have dumped billions of dollars into new eco-friendly vehicle technologies, and some, like Subaru, have also renovated their production facilities in eco-conscious ways. Subaru of Indiana Automotive Inc., located in Lafayette, Indiana, is the automaker's pride and joy when it comes to its green North American production plants. And I got the full inside tour.

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SIA is a zero-landfill plant…