You say this can happen and then relate a story where it took you less than 20 minutes to realize you had a kid missing. That's not the same thing as leaving a kid in the car for hours.
I personally do not think there is any excuse for forgetting a baby for HOURS. It's inconceivable to me. And far too often parents who had "close calls" react to these stories with a "there but for the grace of God go I" sympathy.
If the case is investigated and parent is truly considered to have forgotten, they should STILL BE CHARGED IMO because it will save countless other children's lives in the future. If the idea of a dead baby isn't enough to motivate you to pay attention, perhaps the threat of 10 years in prison or another punishment will be enough.
These days almost everyone uses a car seat with their child. I grew up in a time when my parents loaded us into a station wagon and went on road trips with us crawling all over the seats and mom holding the baby in the front.
You never see this any more because you can get a ticket immediately.
You would think that with these stories happening that more people would be more cautious, but quite the opposite is happening, more and more babies are dying horrific torturous deaths of being baked alive in a car. I'm sorry but my sympathies lie with the victim, not the parent.
RBBM.
That would work in cases of lazy mothers who purposely leave babies in the car while they shop or do whatever. That doesn't work in the case of a baby who is accidentally left in the car - because they can't remember they did it. In some cases, parents actually have no idea the baby is IN the car since their spouse put the baby in there and they have an understanding of a rotating responsibility of dropping the baby off at daycare. I've seen cases where during the flurry of action with both parents leaving for work, the baby is in placed in the car without the parent's knowledge.
When we were kids, if you had a baby in the car, it was in the front seat where you could see it. No one could "forget" the baby right there in the front seat. In the back seat, you can't see it when you get out of the car. Additionally, when and where I grew up there were virtually no families where both the husband and wife worked and used day care every day, and also shared the responsibility for who had the baby. So the chances of forgetting because it wasn't routine habit to have the baby didn't exist all that much.
I have an invention that would work. ;D You could put a fob on the car seat that would not allow you to lock the car if there was weight in the car seat. You go to "boop" the car locked and it won't boop. You would have to MANUALLY lock the car by depressing the locking mechanism closest the car seat. That would end this tragic horror. Virtually no one forgets to lock their car - that's something you do every single time so it's rote habit - and if you had to open the car door nearest the baby, you'd see the baby.