Terex MT6300AC Mining Truck (Polygon mesh 3D model) is available on CGTrader for $13. Original author: octagram14.
STL (Stereolithography, filesize: 14.7 MB), OBJ (OBJ, filesize: 57.3 MB), FBX (Autodesk FBX, filesize: 33.4 MB), BIP (KeyShot, filesize: 23.4 MB)