After having invented the Segway, a novel but ultimately abandoned form of transportation, Dean Kamen went back to the drawing board and came back with the inflatable turbine, which is part-wind turbine and part-LED billboard.
The Segway may not have caught on, but it did do one thing: The upright scooter forced people to reevaluate the conventional transport mediums with a more scrutinous eye. By Dean Kamen's own admission, his most recent patent won't be a game-changer, but will force onlookers to rethink energy-producing methods. The inflatable turbine is a lightweight, portable device that allows users to easily relocate it to windier areas. It also includes a marketing element -- Small LEDs powered by the turbine can broadcast messages that include words, letters and even complex symbols!
Kamen may be onto something here: maybe their lack of advertising or money-making potential has held back green technologies? Time will only tell once this device starts deploying on rooftops near you.