If the world were able to drive less, bike more, it will reduce a lot of dirty air pollutants, not only exercise the body while protecting the environment, but also a lot of energy savings, why not use this cheap and convenient transportation tool?

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If the world people all can little drive, rides the bicycle, then will be able to reduce very many dirty air to dye the thing, both exercised the body and to protect the environment under, but also could save the massive energy, why didn't that use the transportation vehicle which also this kind of

If the world people are driving less, riding a bike, it will reduce a lot of pollution of air pollution, exercise both body and protecting the environment, but also saved a lot of energy, so why not this cheap and easy to use means of transport?

If the world people are driving less, riding a bike, it will reduce a lot of pollution of air pollution, exercise both body and protecting the environment, but also saved a lot of energy, so why not this cheap and easy to use means of transport?