All the critical systems in a modern car -- engine, transmission, brakes, stability controls -- are linked to a single electronic system called the Controller Area Network bus, or CAN bus.

CNN: Behold the?all-seeing, self-parking, safety-enforcing, networked car

The fliers are ultimately told there are no friendly forces in the area - although the ground controller admits he does not know as much about the situation as he would like, and at least one pilot spots orange panels on the British forces which should identify them as friendly.

BBC: Does 'fog of war' excuse 'friendly fire?'

Meanwhile, the controller screen showed a map of the area, a button to change the lighting, a button to change the camera angle, and game details like health level.

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