This Bicycle Breathes

If ever you find yourself in a smog-choked city like Beijing—on certain days, the air is so dirty you can't see across the street—you might want to invest in a breathing bicycle to help you get around. Invented by artist Matt Hope as a way to popularize healthy transportation options in a city with omnipresent air pollution, the breathing bicycle has a self-sustaining air-cleaning system. As you peddle, you power a generator that first pulls air into a filter, and then into a mask, delivering you clean, breathable oxygen.