The air quality of our atmosphere is polluted. The pollution of our air isn't just effecting our lungs but also could be effecting our brain. In the long run the result of it hurting our brain could be altimers disease. If your stalled on the highway then turn your car off; if you need to warm your car then turn it on only for a few minutes versus an hour. I think that eventually we will figure out ways to reduce the pollution but there is no way to get rid of it all. The earth will eventually be polluted to much if we don't do something about it.