Why do some drivers, on a 2 way road, stop if they see an ambulance or fire engine coming towards them. They are not in its way, no need to stop or even slow down. The other one is when you pull in to a petrol station, and there is a queue for the pumps for cars with fillers on one side, but no queue for pumps on the other side. I have a Discovery 4, and it is great for me, because the hose is still long enough to reach round to the other side, so I don't have to queue, if you see what I mean!