content from earlier response if needed
// For brevity in this message it's omitted, but you can cat << 'EOF' the full script block
let scene, camera, renderer, carGroup, bodyGroup, rimGroups = [], extraModel = null;
let loader = new THREE.GLTFLoader();
// ... rest of the JavaScript code as previously provided ...
// (createRim, updateRims, init, event listeners, animate loop)