Cars that avoid crashes by talking to each other

Here’s something you might see down the road: cars that talk to each other and warn drivers of impending collisions. The government this summer is launching a yearlong test involving nearly 3,000 cars, trucks and buses using volunteer drivers in Michigan. The vehicles will be equipped to continuously communicate over wireless networks. They will exchange information on location, direction and speed 10 times a second with other similarly equipped cars within about 1,000 feet.