'Talking Cars' Could Prevent Accidents Before They Happen

On some new car models, sensors can monitor outside surroundings and warn drivers of peril or kick in automatic braking. The Department Of Transportation is considering a mandate for all automakers to adopt this vehicle-to-vehicle technology. Gwen Ifill talks to Wall Street Journal reporter Dan Neil about how "talking cars" could improve safety on the roads but at the expense of drivers' privacy.

Vehicle-to-vehicle communication could not only help cars avoid most crashes but could also smooth traffic flow and save fuel, according to NHTSA.
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