First, too many people drive cars every day. If you have a metro near your job and near your home, use it. It cost more money to drive to work than to take the metro to work. Next, try riding a bike to get around. There are millions of people riding bikes everyday.
Bikes are good for exercise and produce no pollution.
If everyone rode bikes, it would decrease pollution plus make everyone physically fit. Last, lets go into the future. In movies, we see that people use teleportation. If we could use this, pollution will be a thing of the past. In addition to these ideas, it should be noted that technological advances have brought about many alternative forms of transportation and alternative fuel sources, like solar powered cars and natural gas cars.