Annually, trees absorb over 50% of the carbon dioxide produced by burning fossil fuels.

Automobiles, through the burning of fossil fuels, are the main producers of carbon dioxide.

Starting your car when the engine is cold does not produce as much pollution as when it is warm.

On the average, new cars use less fuel and produce much less pollution than older cars.

50% of all Americans live in areas that violate federal clean air standards.

If every car carried two people instead of one to the same place, 40 million gallons of gas would be saved every day.

About 1/3 of ozone-forming pollutants come from motor vehicles.

A well-maintained 10-year old car cannot be cleaner than a poorly maintained 5-year old car.

Only 8% of the world's population owns a car.

Despite dramatic success in reducing pollution from motor vehicles over the past 20 years, cars remain the largest single contributor to air pollution in may urban areas.

Private automobiles are a prime contributor to climate change and air pollution.

Emissions from a poorly maintained car are about 29 times that of a properly functioning car.