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I don’t think that it would be a good idea to ban all cars in city centres. The chaos which some of the politicians are still talking about, doesn’t exist. Of course, streets where cars don’t cruise haven’t got the noise like a normal street has got. But where many shops are, there are many offices, too. And where many offices are, there work many people. If every single person would go by train, tube or bus, the trains, tubes and busses would be fuller than they are at the moment.