I think it is kind of like what has slowly happened in society, concerning pool deaths. When I was a kid, in the 50's and 60's, if a child died in the pool, people thought, OH WELLL, too bad. What a shame. But no one was expected to have pool covers, alarms, locked gates on their pools, or be prosecuted. Now we expect that you will be sued civilly or arrested if a child dies in your pool or jacuzzi or pond.
I hope that happens with car deaths as well. It should not be tolerated. It is not that hard to turn your head to check the car seat. It really isn't. SMH