The New York International Auto Show just began. But we already know the winner of the World Car of the Year Award: it's the Nissan Leaf electric car. I think, that was a very good choice, because this car is electric, and if many would use that kind of cars, it would be a good chance to achieve a more sustainable environment. In the last time the air pollution turned into a serious problem, and people have to do something against it. Bringing into use electric cars is a very good idea, here in HK I already see many of them, and also there are placed "electric refilling machines" at filling stations and parking places.