Car manufacturers around the world are working on vehicle to vehicle technologies to help make driving safer. How will they work? And what difference will the technology make to our experiences on roads?

The car in which I am travelling is speeding towards a T-junction at speed, with the driver seemingly oblivious of the need to brake.
Out of the corner of my eye I spot a second vehicle heading along the road to our left on a collision course. Seconds before an almost fatal accident is set to occur the vehicle-to-vehicle system sounds an alarm and an in-car display warns of the need to stop.

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