yeah, major pet peeve of mine. boiled down, it's a selfish person who's banal phone call is more important to them than your safety (and their own).
and, out of the car and around town, me and my kids laugh at those "great" parents ignoring their children right around them, to yap away with someone somewhere else. or worse, not even talking, just doing the crack-berry thing.
I just don't understand it.