1/100 scale (15mm) Austin-Kegresse half-track. It's a WW1-vintage machine, based on the Austin-Putilov armoured car, that went on for use after the war by the Red Army as well as organisations like the German Freikorps.
This one is printed in Shapeways' High Definition Black Acrylate material. It does show detail nicely, but its 25-micron print layers really show up on curved surfaces, especially gently curved horizontal surfaces like the roof. Also, they're still coming to grips with the mechanics of printing the material — you can see distinct lateral bulges and distortions about half way up the hull, though not as bad as in the Lanchester.