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In the last century cars have become almost irreplaceable objects in modern society. There are almost half a billion cars circulating around the world while about thirty years ago there were about half this number. Most experts agree that the goal of a billion isn't so far away. Nevertheless one must consider that car production and use environmental impact has been strongly improved. This is mainly due to a greater consciousness of manufacturers and clients towards environmental effects of high living standards. This work not only points out the state of the art of the actual situation but also focuses on the improvements that can be reached in a near future.