I can confirm the city emergency braking system works! Wasn't in the city but trying to reverse out of my daughters drive in the countryside. High hedge one side, stone wall the other and a curved drive at night. Reversing camera working well and getting warning beeps all the way. Still getting used to the setup so was trying to sort out were I was going wrong whilst slowly drifting back, beeps went continuous and then brakes slammed on by car, scratches and dents avoided! Well impressed! Would have been too frightened to have tested the system but now unintentionally I have!