Karl Heinz Ranitzsch runs a shop in Shapeways, that is a website where you can create and sell models with rapid prototyping from a 3D file that you make, or something like that (I think). In just some weeks the Carro Celere Sahariano was ready to ship... oh joy! If you give a look to the Dragonman's Depot you can see other interesting models in 1/300 scale, and you can ask to the designer to make wargaming models that are not commercially suitable.
I must say that these models from Shapeways are not cheap. I ordered ten of them (enough for one hypothetical battalion with 1 model = one platoon) in a material called "White Detail" and the total cost, including shipping was $ 36,63 ( 29,54 euros). Anyway I really wanted these unique toys and when they arrived, I was not disappointed.
with some drops of dish detergent.