Truely rail-fans are transportation equivalent to vegans in food or cross-fit in exercise. I've spent many an hour on the Isle of Sodor and appreciate how useful those engines are in so many contexts. Yet still, there are buses that move alongside Percy, and pick up stranded passengers, and the Fat Controller (aka Sir Topham Hat) still has a sedan. It's a multi-modal world out there and the tractor trailer still has a place in it.