This is a 3D model of a typical American police sedan. I created this model entirely in Blender.
I didn't create a detailed interior model; I only created a rough outline so the silhouette of the interior can be seen from outside the windows.
BLEND (Blender, filesize: 47.4 MB), OBJ (OBJ, filesize: 42.5 MB), FBX (Autodesk FBX, filesize: 51.6 MB), JPG (JPG, filesize: 142 MB)