There should be mandatory jail time for such a tragic event.
I bet parents would remember their children are in the back seat.
These poor babies can't do anything to help themselves and are at the mercy of a parent "who forgot" they were in the car??? How in the world does that happen? In my opinion, there is absolutely no excuse.
Many times I see children left in cars while parents run inside a gas station or store, with the car running. I don't get that either, as anyone could easily jump in the driver's seat and take off.
My grandkids are 13 and 10 and I still won't let them wait in the car at any location. If you're driving in my car and I leave the car, they have the pleasure of joining me. Might cost me a candy bar or pop, but at least I know they are safe.