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Even Hands-Free Phone Use May Be Hazardous in Cars

technewsworld The risk of driving while using a cellphone isn't limited to the potential hazard of having one hand holding a device instead of on the steering wheel. The problem is that most people tune out pretty much everything else while on the phone. It's possible to force one's concentration on the road while talking, but the brain wants to lapse into default mode and focus more on the conversation.