text: Passenger cars are responsible for 12 of greenhouse gas, and thats only in Europe. If you look at that as a world percentage, its a lot. The article says that  it is a huge impediment to drastically reduce greenhouse gas emissions form tailpipes. Doing so would be a huge advantage to limit the car usage.            Their are so many things you can do to help keep the envierment safe to live in. Some countys world wide have already started taking these procations to protect the earth. The thing these countries have decided to change in their everyday life is to take cars away or start limiting the use of them. Now this might sound like a big deal but their are many advantages to this appeal of motor use.