More Resources automobiles Advertising tells us that cars are sexy, glamorous, and expressions of power. But from another perspective they enable us to travel great distances under conditions of boring monotony. People traveling through a forest might have once savored the sweet smells and beautiful views, but today we travel with our attention mostly focused on cement and road signs. And everywhere we go in these massive machines, we guzzle gasoline and spew out pollution.
Most vehicles are like small power-plants on wheels, using gasoline as their source of fuel.
Driving causes more atmospheric pollution than any other human activity. Every year, the average American car adds to global warming and acid rain by emitting 5 tons of carbon dioxide. Our cars also produce many other toxic and even poisonous gases that pollute the air we breathe. You probably have known that the world's human population is increasing dangerously. So is the world's car population.