Just read about a 30 or 50 car pileup.
"I couldn't stop," is basically what one person is saying.
OK.
So almost 30 cars, driven by humans couldn't stop.
It was snowing. It's not like it went from a clear LA day to midwest Winder snow in a nano-second, that perhaps might cause a pileup. Pile-ups are happening because people are driving too fast and not leaving enough distance.
They are just proof we are idiots while driving and we accept that. Go America.