Imagine riding a bike up a hill without straining, gasping for breath or slowing down.

Meet the electric bicycle. It looks like any other bike and comes in all shapes and sizes, but it comes with a re-chargeable battery that gives you that extra pedal power you need at the flick of a button.

Electric bicycles are gaining in popularity around the world as an environmentally friendly alternative to driving.

Jinah Kim has more from Los Angeles.

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