Some points from The Mirror.
Hundreds of thousands of children are traveling in smoke-filled cars every week.
In England alone, more than 430,000 children aged 11 to 15 are exposed to second hand smoke in cars each week, according to estimates by the British Lung Foundation.
185,000 children of the same age are exposed to smoke while in the family car on "most days", if not every day.
"Given these data only cover children aged between 11 and 15, it is possible that the total number of children affected on a weekly basis could be in excess of half a million."