$25 Explorer robot platypus transport vehicle 3D model by izydor-template. Available on CGTrader. Check it out on CGHub.
STL (Stereolithography, filesize: 13.9 MB), OBJ (OBJ, filesize: 35.1 MB), STP (STEP, filesize: 28.1 MB), FBX (Autodesk FBX, filesize: 30.8 MB)