The models are available in 3 formats: max (vesion 9), fbx and obj, but it can be converted for free, on request, to any format you may need. The max version contains both standard and vray materials.
Lots of details were added in the textures, which makes the models less 'polygon heavy' and makes them suitable for rendering hundreds of instances in a single scene or even usable in real time simulations.
If you need a highly detailed mesh that is suitable for the most extreme close-ups click 'RippleDesign' and look for the 'Mine Resistant vehicle collection' product
If you purchase the high definition model, you will get this one for free.
Polycount for each model: