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[quotemsg=17807447,0,204033]What about using NFC to disable anything but GPS or hands free calling?[/quotemsg]
How about using the grey goo between your ears, and drive the damn car?
Hands free does NOT make it better. Your brain is still occupied on things 'outside' the car.
I'd argue against that. Talking on the phone (handsfree) doesn't require much more concentration than, say, singing along to a song, listening to a podcast/audiobook, or talking with a passenger. And if something happens ahead of you that requires your attention, there's nothing preventing you from focusing on the road long enough to deal with whatever situation. If your eyes never leave the road and your hands never leave the wheel, you're fine. If anything, having the stimulus of music or conversation in the car keeps you more alert and less likely to space out for long periods of time, or worse, fall asleep.[/quotemsg]
MIT would disagree with you.
http://groups.csail.mit.edu/rrg/papers/trf10-br.pdf
In part:
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Although Törnros and Bolling (2005) report that drivers slowed their forward velocity to compensate for the increase in cognitive workload associated with a cellular phone conversation in both hand-held and hands-free conditions, the effect was more pronounced for drivers using a handheld phone. In a recent review, Ishigami and Klein (2009) note that the findings from several studies suggest that drivers tend to compensate for the potentially negative consequences of using handheld phone but fail to do so when using a hands-free cell phone.
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Also, it depends a LOT on the type of conversation.