GM to showcase revolutionary technology allowing cars to 'talk' to each other

It won't be long before our cars drive themselves at the rate things are going. Fifteen years back, this stuff was only seen in Star Trek. Now, we've got cars that can help you drive safely, correct skids, warn you of impending collisions and even help you to steer properly in the case of a loss of control. Others have lights that point, brakes that dry themselves and even keys that you don't need to remove from your pocket. But what's really neat is the cars that talk to their drivers- or that let their drivers talk to them.