Mallard for the April's train

I mentioned back in January that we bought, at the insistance of Wolfie (and to the dismay of his mother) a train calendar. I got really excited when I turned the page to the April month: there was a picture of Mallard. The fastest steam train in the world. Now, I am not an expert in trains even though I love them, but I saw this very train at the National Railway Museum in York. This is the picture I took of the locomotive, which I understand is legendary. Not a very good one, I'm afraid, as you barely see any of it. I really want to visit revisit the museum with my son. I think it would be a great treat for him.