It's a well-known fact that pollution caused by vapour gases, heavy car-manufacturing industry and gasoline production is one of the burning environmental problems of many European countries.
Considerable money are spent on development and introduction of new environmentally-friendly technologies, but obviously minimization of environmental harm caused by car production cannot prevent this pollution 100%.
The only way I see for solving this problem is invention and global introduction of environmentally-friendly vehicles, like bicycles, though faster and more powerful, driven by human muscle power, which could be used for transporting weighty objects over big distances.
I hope that one day some genius invents such mechanical constructions made of light durable metal like titanium, that will also have a flying function. This way the environmental pollution from transport means would decrease 100 times through exclusion of its vapour gas and gasoline