A few days ago, I was traveling home and waiting at a traffic light when I heard a small voice call, "Hi!" I looked into the car next to me, which had open windows, to see a little boy smiling at me. He was fairly small, under 2 I'd guess (with a paci in his mouth) and had two siblings next to him, also fairly young (maybe 4 and 5?). All the children were entirely loose in the back of the car, with no seatbelts or carseats whatsoever.
Would you do anything in this situation? Get the license plate and report it? Attempt to say something to the adults in the front seat? I had to fight the impulse to ask if they'd be willing to use carseats if I bought some for them, because I thought it might appear insulting. Usually I am a laid-back, free-range-kid style of parent, but the lack of carseats is *way* up there on the dangerous scale and also will get them pulled over in this state. Maybe it will, eventually.
I didn't end up doing anything, as I wasn't sure where to draw the line of being a busybody, and given some experiences I've had, I know how dangerous it can be to involve the authorities in a family's situation. But I'm curious if you would have done the same. I'm posting it here because I don't think it's really etiquette exactly.