Just to throw a wrench into the mix.
What if the receiving person didn't have their car inspected, or, the receiving person didn't have in their vehicle a booster seat for a child that is required to have one because of age?
Is that justification for turning around and going back home, or would this come off as being petty?
I had to deal with this once. On Christmas day two years ago, I meet NJ at a mcdonald parking lot to hand over the kids and noticed her inspection was out. I wouldn't let the kids out of my truck until Mr.State trooper showed up. I told him I wanted her cited, he said "Don't tell me how to do my job"
In the end, he gave her a warning to have her wheels inspected within 5 days.