So this is an alternative baggage element for my Condotta Italians (specifically, it would be Milanese) and represents one of Leonardo's military devices. There is, of course, no evidence that the machine was ever built*.
The plans show what look like cranks driving gears which directly turn the wheels. Clearly it would have needed an engine of some sort to be viable. I have shown a prototype machine being towed to the battlefield by horsepower.
The model itself is resin, by Alternative Armies - and I got one for Christmas. You could argue that it is 'Artillery' although it is a bit big for a DB Art base (it is 50mm across, so overhangs the standard base used with 15mm figures) ... so I have magnabased it, and provided alternative bases: a camp, which I would imagine would be its normal use; and a square sabot, which could see it as Art or, conceivably, WWg (as Leonardo clearly meant it to 'move and shoot').
All three camps are newly added to the Camps and Baggage page. There are now over 30 camp vignettes featured, with some 70 photos - hopefully to both entertain and inspire. Feedback always appreciated!