Thus spoke the autobahn

Seeing taillights flash up ahead, you slam on the brakes, thus sending the signal you've just received to the car behind, with a lag. That car relays the same information with a lag of its own, creating a monstrous traffic jam kilometers down the line. That's the sorry state of car-to-car communication today. Drivers must be totally alert; yet even so, they can't help triggering perverse results. This problem will start to end this decade, as cars begin to communicate with one another in a way that allows each to see through the eyes of those that have gone before.