Low Poly Kart With Player 2 Low-poly (Polygon mesh 3D model) is available on CGTrader for $7. Original author: Macrobian. Specs: 12833 polys, 35200 verts.
OBJ (OBJ, filesize: 419 KB), UNITYPACKAGE (Unity 3D, filesize: 6.24 MB), FBX (Autodesk FBX, filesize: 650 KB), TEXTURES (Textures, filesize: 5.49 MB)