$65 Chevrolet Impala Convertible 1966 3D model by Carmodels3D. Available on CGTrader with 248000 polys and 260000 vertices. Check it out on CGHub.
MAX (Autodesk 3ds Max, filesize: 35.3 MB), OBJ (OBJ, filesize: 37 MB), FBX (Autodesk FBX, filesize: 13.2 MB), MAX (Autodesk 3ds Max, filesize: 35.3 MB), 3DS (3D Studio, filesize: 11.2 MB)