Yeah, it'd be a bit of a challenge I suppose. Was going to try and make some crazy custom trike out of it, but have been advised not to and I think it's apparent rareness means it'd be a silly idea.
One back wheel is quite 'wobbly' I suspect bearing/s have gone, so need to work out how to remove it then see what I can do. I did try tightening the nut, but didn't make any odds. Not entirely sure what to do with it, probably just make it work better and put a wicker basket or old beer barrel on the back. Nothing that can't easily be reversed, though.