Revolving Door = Electricity??

I love ideas like this because they're so simple, but can make such a huge difference if installed on a wide scale. The GOOD people at FluxLab, all working out of Brooklyn Tech, have created the NYC Revolution Door. The invention uses the revolutions from a revolving door to generate electricity. The fact that revolving doors are a staple of damn near every Manhattan office building makes this idea invaluable. The incentive-based electronic board connected to the door is all the more reason for people to want to use revolving doors. At this juncture in human history, we'd be stupid not to explore every avenue of energy and energy creation possible; even the little things. Check the video out...