On the same day the National Highway Traffic Safety Administration announced cars sold in the United States will soon be required to have backup cameras, Tesla and the Alliance of Automobile Manufacturers petitioned the NHTSA to allow exterior-mounted rearview mirrors to be replaced with cameras. Currently, Federal Motor Vehicle Safety Standard No. 111 requires cars to have side mirrors, but the Tesla and the trade group — which consists of 12 auto manufacturers including BMW, Ford and General Motors — want the safety standard revised to allow camera-based rearview systems. …