I always call. Quite frankly I am shocked that people are comparing car seats with vaccines. As the partner of an ER worker, I don't want her coming home ONE MORE TIME to tell me the story of some kid who got killed because they weren't restrained properly. It breaks my heart every time she tells me, and I let her because obviously she needs to tell someone her heart is broken from witnessing the whole thing, at least I don't have to witness it first hand. I always tell these two stories, about the 12 yo told by her aunt to hold her baby cousin in the back seat, they were in an accident, the baby was ejected. No one in the family wanted to tell the girl the baby died, I am sure it will weigh on her mind for the rest of her life "if only I had held her tighter", the aunt should be prosecuted for manslaughter imo. Or the story of an unrestrained baby ejected from the car during a crash, it was dark, the EMS workers and police spent an hour trying to find the baby by the side of the road. Imagine how difficult that would be...... call the police if you see children unrestrained, seriously.