Haha that's awesome, i want one!
Sorry for the minot hijack, but i guess it's quite relevant: I remember seeing a video (Clarkson, i think) about a guy who'd built an exact, running scale model of one of an old Ferrari 312PB. EVERYTHING worked, from the engine, to the gearbox, even down to the dials on the dashboard which can't have been more than 10mm diameter. The whole car was only about 2 feet long. And he'd made all the parts himself. I'll see if i can find a website about it...
EDIT: Ok so my dimensions were a little off, it's a 1/3rd scale model.
http://www.fineartmodels.com/e/gallery/scerri/
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"The Scientist explores what is,
the Engineer creates what has never been."
- Theodore von Karman