Human nature and driving.
The problem with driving is that it combines high attention, monotony and habitual behavior in a life threatening activity. The consequences of mistakes are incredibly high running in the tens of thousands of deaths a year. It is the single most dangerous activity that people do in their lives. Deaths by car accident are no longer tragedies but statistics.
Add to that the increasing number of distractions in our lives (such as blogs - guilty) and you do have a recipe for sadness. Kevin Tofel of GigaOM discusses a study on fleet drivers and their gadget use while driving.
"You can hide from the truth if you want to, but you have to know it first" - John Ostrander