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Yes, and they still have hand-crank generators for a lot of emergency devices such as radios, sirens, lights and even a cell-phone charger. (I've got HC lights for my car and house) I'd use the stationary bike just for the exercise. If it could provide enough power for a fan or radio, that's just gravy for the goose.
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My 5 pillars of fuel efficiency:- driving style
- aerodynamics
- tires
- weight reduction
- engine maintenance
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