Britain will soon ban smoking in cars with children. Britain's government wants to reduce the harm cigarette smoke does to children. New laws will cut the chances of children passive smoking. This is when someone breathes in the smoke from a cigarette. Many studies say passive smoking can almost be as harmful as actually smoking a cigarette. The British government said it looked at research that found children who sat in smoke-filled cars had health problems. Britain's leader David Cameron said the problem is particularly bad in cars because there is so little space, so the car fills with smoke very quickly. The new law will make it illegal for anyone to smoke in a car that has a child in it.