Check out ambulance Low-poly 3D model on CGTrader for $3. High-quality mesh by mostafa0marr: 808 polys, 943 vertices.
STL (Stereolithography, filesize: 88.4 KB), OBJ (OBJ, filesize: 99.3 KB), FBX (Autodesk FBX, filesize: 61.8 KB), GLTF (glTF, filesize: 97.2 KB), BLEND (Blender, filesize: 1 MB)