Probably someone just caught a glimpse from a distance of child being lifted into the back and the trunk closing so it caught their attention. Then they watched the vehicle drive off and it caused more concern given the look of the vehicle and from a distance you couldn't see the kid buckled into a seat. I applaud the person who called the police. There's not much worse for a parent than an abducted child.
Yes, but you wouldn't say that if it happened to you. As this might happen again and again...