Under normal driving conditions, an internal combustion engine in a car produces approximately 200 grams (0.2 kilograms, or 0.44 pounds) of CO2 per kilometer driven. Assume that a city you are...

Under normal driving conditions, an internal combustion engine in a car produces approximately 200 grams (0.2 kilograms, or 0.44 pounds) of CO2 per kilometer driven. Assume that a city you are studying has 7 million cars and that each car is driven an average of 20,000 kilometers (12,400 miles) per year

If 20% of the city’s residents were to walk, bike, or take mass transit instead of driving their cars in the city, how many metric tons (and tons) of the annual emissions of CO2 would be eliminated?