I did not see the video either. I'll be honest and say that I have studied for tests while driving before. I have also had to pull off the road and put my Twilight books in the trunk - they were so addicting.
I've also been guilty of reading while driving. I would only do it at long stoplights I was familiar with, or when I was totally stuck in traffic.
Doing something that is so distracting while you're actively driving is nuts, but nothing surprises me these days. You have to be a defensive driver at all times to minimize your risk of having an accident.