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If riding a bicycle to work is not eco-friendly enough for you, turn it up a notch or two by going green all the way. Designed elegantly with a brilliant shade of green, this concept creation of Mr. Onuff Studio is being dubbed the Green Shadow. The design is ergonomic, futuristic and stands as a fine example of wise employment of both form and function. Apparently tracking mileage, heart rate and calories through the handle-bar mounted LCD, this makes for a fine addition to the collection of fitness maniacs and the gadget geeks. So are you game enough for the vivacious green ride? [via Yanko]