A $9 cardboard bicycle may not sound promising, but this two-wheeler is plenty sturdy, light, waterproof and can support a rider up to 20 times its 28-pound weight. Israeli mechanical engineer Izhar Gafni touts the affordability and green credentials of his bike but notes "the only issue is to make it have a softer ride," promising a shock absorber system within the year.

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The Toronto Star

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