What a great idea, Cheryle! I'm going to do that in our car for all three of us. We have so many problems health-wise in our little family it would be worth doing it for allergies et cetera as well as NoK.
I have tinted rear windows too; DH hates the stick-on roller shade things so was very keen when he saw the tinted windows when buying the car.
Bath, if someone isn't driving perfectly I don't get cross with them. If someone hits me then I do! I am not perfect, I am not a perfect driver, I do not expect others to be. But a "baby on board" sign doesn't make me happier with bad drivers. It makes me think they know they are going to behave poorly on the roads - so no excuse! I don't know when I go out if I'm going to be blinded by flashing headlights or not, that would be a reason for slightly off driving. Knowing you cannot drive with a baby in the car and doing it anyway is most vexing. As well as dangerous.
And if children are fighting, my parents used to pull over and make us apologise for holding up the journey. We weren't allowed out the car until we apologised. We'd miss a day out if we didn't behave. OK it affects the whole family but it teaches the lesson quickly! (I do sometimes think my parents were a bit strict on some things, given how young we were, but it does work and by junior school we rarely argued in a car and senior school not at all, not unless I was driving anyway but that's a whole nother story.)

