Just an idea I got as I drove past a short traffic jam with my bicycle.

I noticed that everyone sits in his “box” (also known as car) and that there is no communication among the drivers (with the exception of honking). Wouldn’t it be funny to chat with the drivers in front and behind of you?

From a technical point of view the realization would be rather “simple”: two displays (one display for showing messages to the driver in front of you, and the other for messages to the driver behind of you), and some sort of a keyboard integrated in the steering wheel (or a speech-to-text system).

How would people use such a system (if it would be used at all)?