I did happen to notice that while I was driving at work a really old beat up BMW undertake me on a dual carriageway which had a "baby on board" sign stuck on the back window, "keep your distance-children on board" sticker on the boot and two occupied child seats with a third child in between kneeling back and waving out of the rear window at us.
It probably would have been fine had I not been driving an ambulance at the time with blue lights and sirens wailing at about 80mph.
Perhaps the driver didn't actually like her kids that much.