Things would stay simple when the vehicle is moving, and the license plate number would remain visible at all times.

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But they did get the license plate number and later tracked the vehicle to him, the traffic spokeswoman said.

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The Magellan Wireless Back-Up Camera kit comes complete with a license plate mountable camera, transmitter, wireless receiver, vehicle power adapter, installation hardware, and instructions.

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Each car receives a special red license plate emblazoned with the infinity sign and the letters AU, for autonomous vehicle.

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After the camera system captured each driver's license plate, the bill for the toll would be assessed electronically, with the assistance of motor-vehicle departments from around the country.

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