First of all apologies if this has been mentioned before. We are in Edinburgh and were just passing over the rail bridge at Princes Garden. There was a class 185 TPE coming into Waverly and both my wife and I are convinced we saw it as a 4 car unit. I am sure it has been done and seen before but its the first time I have known or seen it run as four. Ps, we're not losing the plot are we?