If you're so busy you can't even remember your own child is in the car then you shouldn't have children, period.
Frankly if you treat a child like a handbag, or something else you casually forget in the car and something happens you should be held accountable, f&@+ the selfish piece of s**%.
No I did not read the article, I doubt reading it will change my mind and that is too heavy for a Monday morning :-)
So, when you suddenly become overwhelmed by other circumstances, what should you do with the children you already have?
This happens. It happens very, very rarely and it seems to happen to people nearly randomly. Stress and distraction in the moment seem to be the triggers. Should you only have children if you can guarantee that for the first (5? 6? more?) years of their lives you will never be busy or stressed or distracted?
That means no one would ever have children again.