text: Even hands-free devices that allow us to talk on the phone while driving with both hands on the wheel are still a hazard. Studies have shown that while talking to someone on the phone your brain is putting a lot of its energy into the conversation. This means that less of your brain is focused on driving the car. Yes, that could also mean a conversation with someone in the car is dangerous but you add in bad reception, how uncomfortable the hands-free earpieces are to wear and the annoyance of static or wind and you have a worse distraction.