In the pipeline (4)

Well, what have we got here, then? One of our eagle-eyed racers came across this creation on YouTube, and a hugely impressive piece of engineering it is. We don't know the gentleman responsible for it, but he name-checks us – hope we get to see it in real life, real soon!

Here's some more pictures from his film, (below) or you can see the whole thing for yourselves at http://www.youtube.com/watch?v=n8RN4DFAndU