SunChips Compostable Bag

I'm sure most of you have seen this sunchips commercial... they also have a clever billboard.
http://www.sunchips.com/advertising_television.shtml
The bag is made out of a plant-based polymer called PLA (poly lactic acid) made from corn and other starchy vegetables. Supposedly, in an "active compost system" the bag will completely decompose in about 14 weeks. I was thinking of compost yesterday during our solar decathlon meeting with living systems engineers. Among other things, we talked about bioremediation ponds with plants for treating greywater, green walls, edible gardens, and, of course, compost. Our concept submission for SD2011 is due in 2 weeks, and I think part of this concept will embody the idea of a home that functions like an ecosystem... generating its own energy/food, and recyling/reusing its waste. (we realize this is not fully possible but is an admirable goal, I think) Just thought you might like to know! Anyway, hopefully other companies will follow sunchips and begin implementing similiar environmentally-friendly initiatives.