Yep, older cognitive processes don't work as they used to.
I wonder about all these surveys... What are they gonna say once the multi-tasking, mutli-monitor Doom/Halo raised children start driving. Will they provide the same results?
Cell phone usage is obviously dangerous since you spend time creating the image of the person or story in your mind blocking out in-front of you visuals. lolo, I've driven through town and end up realizing that by being on my phone I really didn't remember a large portion of the road I had just driven.
However, the times I have used built-in bluetooth through the car's speakers I didn't enjoy the same paranormal experience. Not very scientific but this could be related to 3 different types of people according to NLP.
As for apps, I bet that this is similar to what people were first thinking when car navigation came around. Or even the first digital visualizations on radio decks.
I would say that a well developed UI could actually reduce risks of fiddling around with your deck.
BUT! What about normal gages? When I was driving my garage queen I spent most of my time watching the oil temp lolo, the only way to keep my eyes on the road was to drive faster than the speed the oil takes to over heat. Would this type of situation also apply as "busy driver"?
UI and easy access !