I would recommend downloading the .blend file because the alternative formats do not have the proper materials. The wheels are all separate so you can animate them.
Native Formats: BLEND (Blender, filesize: 207 MB)
Exchange Formats: OBJ (OBJ, filesize: 566 MB), FBX (Autodesk FBX, filesize: 112 MB), DAE (Collada, filesize: 223 MB), STL (Stereolithography, filesize: 236 MB)