Carbon Footprint
Introduction
The number of private vehicles are now increasing. It is an alarming issue since more cars mean more sources of greenhouse gas emissions. These vehicles used traditional diesel and gasoline engines which emits large amounts of greenhouse gases (Barmore, 2013). The current number of cars reached about 1 billion. The largest quantity of cars is from the United States which is the birthplace of the land vehicles. The latest trend about the quantity of private vehicles is that it will be doubled in 2030. That is about 2 billion cars that are contributing to the air pollution ...