I was just curious. I can see how it can happen even to the most responsible people. I think everyone expirences auto pilot moments and other variables can interfer with the flow etc. I also agree some people are more preoccupied then they need to be. Trouble is they don't think they are and that's where the danger comes in. I for example have severe ADHD that I have always needed medication. I have to be super careful to take my time in order to stay on task and keep myself and family safe. My brain moves on to the next thing on my list as I'm still doing something even if the task is not completed. Sometimes just thinking triggers 4 others thoughts and I may or may not return to the initial topic. Small example - getting out of the shower yet leaving the water running all day long because in my head its done. I've showered and my brain is on to the next thing I need to do with no thought of shutting off the water. True story! Its constant chaos in my head unmedicated and 50% better medicated. But I know this about myself so I make sure to take my medication and have developed strategies and coping skills to avoid major issues brought on by my bunk brain. I'm OCD basically when it comes to my children and their safety. This means I have to follow very specific routines to insure I'm not careless or loose focus. If I'm in a situation that calls for spontaneity I really have to go slow and take my time. I bring this up because I equate it to what it must feel be like for someone who takes on to much, is preoccupied, busy, distracted, comfortable and caught up in the hussle and bustle of daily life assuming nothing bad will come of rushing and living this way. Its easy to think once you are in the car doing the same thing you do every morning going through the motions subconciously but most people don't account for the danger of mixing things up and how that affects their mental " cruise control". This is where mistakes happen and I can understand how fast and easily it can happen. It is an excuse but i can see it. That being said I have a hard time deciding where and when an accident becomes criminal. Its not always black and white for me.