This is totally absurd. How could a mother leave her children alone in a hot car for three hours, and not have the God given sense to at least check on them.
I will not leave my babies alone in a car even for 1 minute.
Maybe I'm just too new at motherhood, but I've NEVER left my girls alone for one second, even if it has cost me a spot in line or some other inconvenience...I just couldn't imagine anything on Earth more important than my three!