"...federal regulators will soon demand that cars automatically relay information wirelessly to one another as part of the U.S. government's vehicle-to-vehicle communication program. Those car-to-car messages will one day be able to engage brakes -- or your steering wheel"

That's bad. Governments are (by far) the most violent organizations on earth. They expand to control everything they can. The actions of power are always to increase one's reliance on it. It's almost a law of nature. If we give up our ability to control our momentum and kinetic energy, it's more than a slippery slope. It's a path to black boxes in everything, including people.