Hat tip to Iain Robinson for this, an amazing piece of work by David K Smith. Iain actually picked up on a micro (in every sense) model railway, but I dug a bit deeper (all puns are intended) and found this - a working 1:160 scale digger.
What I really love is that I can see how this thing works. David's excellent and informative video shows you everything. In theory any of us could build something like this but in reality very few would have the skills required. You can't bodge in this scale, all the workmanship has to be of the highest order.
Oh, just watch the film. It's brill.