I saw this and thought of my UB5 cyclist buddies:

Montague Paratrooper Pro Folding Bike


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The Montague Paratrooper Pro bike is built like a tank, folds like a Swiss Army knife, and weighs less than body armor. Backed by a DARPA grant, David Montague designed the original Paratrooper bike in 1997 to be used by the U.S. Marines. The result was a cycle that a paratrooper could unfold as soon as he hit the ground. The Paratrooper line hasn’t been changed much for civilian use, but the expanded line now includes the Paratrooper Pro, a bike that’s great for the daily commute but truly excels at extreme-terrain trail riding....