The document discusses how driving habits can negatively impact the environment by releasing carbon dioxide (CO2) into the air. It states that the number one contributor of CO2 pollution is the use of fossil fuels for transportation. Burning one gallon of gasoline releases up to 8,887 grams of CO2. However, practicing eco-driving techniques like removing unnecessary weight from vehicles, reducing braking and acceleration, and maintaining proper tire pressure can help reduce the amount of CO2 produced while driving.