What Did One Car Say to the Other Car?

“Hey, Honda Civic, my friend, stay in your lane. This is a friendly message from the Ford Focus to your right.” “Well hello there, Ms. Lexus. How about letting up on the gas a bit? It’s dark and the roads are icy and, heck, what’s the rush? This is just a caring note from the Cadillac in front of you.” Cars talking to each other? It could happen. Maybe not exactly like that but in ways that could prevent crashes and save lives.