Update public/index.html

public/index.html

@@ -151,7 +151,7 @@
         lamp: null
       };
 
-      loader.load("https://immersive-web.github.io/webxr-samples/media/gltf/sunflower/sunflower.gltf", function(gltf) {
+      loader.load("https://threejs.org/examples/models/gltf/RobotExpressive/RobotExpressive.glb", function(gltf) {
         models.car = gltf.scene;
       });