text: Smog is a major factor why people all around the world are either limiting driving or even banning cars with in the region. An example of that would be Paris who had were near a record day setting of pure smog. The effect of this led Paris to enforce a partial driving ban to clear air of the global city. Motorist were ordered to leave their cars at home or suffer the consequences by getting fined 22-euros. This difference led to a congestion which went down to about 60 percent in the capital of France. Animals have suffered the most since cars started to evolve or became more useful.