Cars avoid crashes by talking to each other
Talking Cars
In this photo taken Tuesday, May 22, 2012, professional test driver J.D. Ellis of Cincinnati, Ohio, demonstrates the side mirror warning signal in a Ford Taurus at an automobile testing area in Oxon Hill, Md. The display at a recent transportation conference was a peek into the future of automotive safety: cars that to talk to each other and warn drivers of impending collisions. Later this summer, the government is launching a yearlong, real-world test involving nearly 3,000 cars, trucks and buses using volunteer drivers in Ann Arbor, Mich. (AP Photo/Susan Walsh)