text: A second advantage that limiting car usage has is that it eliminates pollution. A car gives off sound, light, and air pollution which all effect our ecosystem whether you notice it or not. The U.S may not have as much air pollution as other countries but with the increase in car purchases it could get worse. I'm not saying youn have to completely get rid of your vehicles, but maybe the license plate bill may work. Every other day only license plates that begin or end with odd numbers could drive, and on the days the odds can't drive we allow the plates with the even numbers to drive. People could car pool with co-workers on the days that whoever has those plates can drive. We just need to start taking percausions on our car usage.