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.