As always, I take slight issue with these kinds of reports, mainly...
"Recent research by the National Safety Council on distracted driving has shown that cell phone usage when driving can cause a driver to miss up to 50% of the information collected in their driving environment, and that hands-free cell phones do not provide any safety benefit when driving."
The distinction is clear to me as a self aware, self analyzing, serious driver and user of electronic equipment, that devices effect you in at least two major ways:
1. Devices cause you to take your eyes off the road, thus increasing your reaction time by a very large margin.
2. Lower the priority of additional information that might be gathered while driving, which is what this report refers to.
The problem with #2 is that your brain prioritizes the information it receives. While you may not remember all the road details as you are talking on a phone, your brain will certainly recognize a car on a collision course, and raise it to the top of the priority queue. This is why I am happy to talk while driving the open desert, because there isn't any important "extra" information to lose. Conversely, I avoid talking on the cell phone while driving city streets while trying to find a place I've never been to before, because I need as much extra information as I can get in order to find where I'm going. Note that I don't do this to avoid a wreck, I do it so that I can find where I'm going.
And as always, a persons ability to priority track and information track varies person to person by a large degree.
However if you are looking down at your lap because you are texting someone, no amount of reflexes, fast thinking, or good driving will save you from an accident you never see coming.