seriously?? If I see that I'm coming up on something and its getting bigger...and bigger and not moving, I get the **** outta the way.
That makes sense only from the standpoint of an armchair quarterback. The reality is that the mind has delays built into it and every mind has different reaction times under different situations with different distractions. You can improve your chance of survivability if you ride totally paranoid like a fighter pilot over enemy territory. However if you do that you don't enjoy the scenery and sensations of the road.
I don't like "Rides" because I find that thinking about what the other riders are doing or how they will react to different situations affects my reactions.
Did the rider look in his rear view mirror to check on his wife? Was he thinking of where to stop for dinner?
Like most bad events, there are numerous contributing factors. Had Miss Ducksaver stopped because her engine blew she would be guilty of nothing and the rider / passenger just as dead. The degree of guilt relates to the why the driver stopped. You stop for moose and deer not ducks. What about a dog? A chihuahua or a great dane?