The car has a self-diagnostic system, but it's not working. It's because the vehicle is using a tracking system to find them. The reason why the car can't be located is because it has no way of seeing the vehicle with its naked eye. It has all of its own coordinates, so it needs a reference. The weapons cabinet is a reference, so the car should be able to see it. The car starts to move, but the police have moved it to the lower part of the tunnel. They should be safe, says the boss. He suggests they head back to headquarters.