It's the only thing I can think of that would take someone's eyes and attention off the road long enough to commit involuntary suicide. I know people are always multi-tasking in their cars (digging under the seats for something or in the back seat or glove box/console) but they do those things at lights or while looking at the road. This text shit just shuts you down from minding your driving. Nowadays, to make it home safe takes about as much luck as skill.