As I said, Baby on Board annoys some people.

But I don't get it - there are a lot of people who drive around with a mind-set that the other cars are rival in some kind of competition, and all of us can find ourselves slipping into that way of thinking - and that sticker ought to jerk us out of that sick fantasy.

But since it probably won't in most cases, and it does seem to irritate some people, and irritated people are more dangerous drivers, it's probably not a good idea having the sticker.

But it's amazing the number of cars that do have drivers ploughing into the rear of them, and the number of drivers who drive crazily close to the car in front.

I wish they had some kind of reliable personality tests for drivers - there are so many technically skilled drivers who should never be allowed behind the wheel or in the saddle of any vehicle with an engine.