A little-noticed federal mandate could take control of your car in the name of safety — and lawmakers in both parties have declined to block it. The federal government is moving closer to giving your car the authority to decide whether you are allowed to drive — without a warrant, without due process, and with no guaranteed way to reverse the decision once it is made. And it is happening not because of one party alone, but because Congress, across party lines, has failed to stop it. It's no accident that all this happened quietly. It was written into law...