http://www.wikihow.com/Live-Without-a-Car Please note, that the link above does by no means express my feelings or beliefs.
Furthermore, motor vehicles may contribute to the increase in global CO2, through the use of fossil fuels, though this is way overexaggerated. The greatest contribution to global CO2, via the burning of fossil fuels, is from Power Plants. Think about that the next time you surf the net, watch TV or plug your electric vehicle into the wall.
Oh, and my opinion? I think it's too late. There's no turning back, we are all doomed.
Have a great day.