Tractor
self-propelled (tracked or wheeled) machine that performs agricultural, road-building, earth-moving, transport and other works in aggregate with trailed, mounted or stationary machines (implements).

Number of polygons:
low poly - 10k
middle poly - 36k
high poly - 292k

The model contains a rig, to set the desired pose of the model, it is enough to rotate the controllers.
Suitable for 3d max 2011, the modifier stack is not collapsed.