Here's a new twist on going green. The Alfa is a cardboard bicycle made almost entirely of recycled materials. You actually don't have to worry about getting it wet as the cardboard material is treated to not only become sturdy but to withstand the elements. If you think it will collapse under the weight of heavier riders think again. The 20-pound version can carry almost 500 pounds. The kids version is planned to tip the scales at less than 8 pounds and cost only $5! If this catches on it could start a revolution and get bikes into the hands of struggling children in developing nations. Keep your eyes peeled for them and pre-order one when you can to be the first on your block to have an origami bike.