How does crap like this happen

The link at the bottom is for a video clip where a deputy helping a stranded motorist is hit by an out of control pickup. Amazingly the deputy is going to be fine, hard to believe when you actually watch the clip though.

You see clips like this time and time again where someone is pulled over and someone driving by is spacing off and then all of a sudden they notice the car pulled over, panic and then go out of control. How are people that stupid? I have been driving for a couple of decades, and I cannot remember one instance of spacing off, then all of a sudden realizing someone is pulled over (or on the shoulder because of a breakdown, whatever), panicking (typically by slamming on the brakes) and going wildly out of control. I can't even recall having to hit the shoulder because I lost control of the vehicle so I wonder how this happens.

Its kind of scary thinking there are people who should still be alive that are now dead because someone else was too much of a dumbass to control their vehicle.

http://www.thekansascitychannel.com/news/4507026/detail.html