15-Pound, Retro-Tech Flywheel Helps You Pedal Your Bike To Tomorrow

A 22-year-old inventor combines two old technologies into a bicycle that saves energy when it brakes and can then accelerate without pedaling. The technology of a flywheel is simple and old: Use energy to spin up a wheel very quickly.

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15-Pound, Retro-Tech Flywheel Helps You Pedal Your Bike To Tomorrow