I'm not sure about that. Pollution comes out of the back of the car, and the drivers sit well in front of the tail pipe. As long as they're not standing behind

I'm not sure about that. Pollution comes out of the back of the car, and the drivers sit well in front of the tail pipe. As long as they're not standing behind their running car for long periods of time, the person inhaling most of the exhaust will be the car behind them in traffic or more likely, the pedestrian standing beside them on the sidewalk at a red light.