car.setAttribute('position', { x: 0, y: 0.560, z: 5 });
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
<title>VR Demo</title>
<script src="https://aframe.io/releases/0.5.0/aframe.min.js"></script>
<!-- <script src="js/webvr-ui.min.js"></script> -->
<!-- <script src="js/webvr-polyfill.min.js"></script> -->
<!-- <script>
var renderer = new THREE.WebGLRenderer();
var options = {'color': 'rgba(255, 255, 255, .5)'};
var enterVR = new webvrui.EnterVRButton(renderer.domElement, options);
document.body.appendChild(enterVR.domElement);
</script> -->
</head>
<body>
<a-scene>
<a-assets>
<img id="boxTexture" crossorigin="anonymous" src="https://i.imgur.com/mYmmbrp.jpg">
<img id="groundTexture" crossorigin="anonymous" src="https://cdn.aframe.io/a-painter/images/floor.jpg">
<img id="skyTexture" crossorigin="anonymous" src="https://cdn.aframe.io/a-painter/images/sky.jpg">
<!-- <img id="infoText" src="/assets/info.png"> -->
<img id="pedestalTexture" crossorigin="anonymous" src="assets/metal.jpg">
<audio src="assets/music.mp3" crossorigin="anonymous" autoplay
preload loop></audio>
<a-asset-item id="avent" crossorigin="anonymous" src="assets/avent.obj"></a-asset-item>
<a-asset-item id="avent_texture" crossorigin="anonymous" src="assets/avent.mtl"></a-asset-item>
<a-asset-item id="lp670" crossorigin="anonymous" src="assets/lp670.obj"></a-asset-item>
<a-asset-item id="lp670_texture" crossorigin="anonymous" src="assets/lp670.mtl"></a-asset-item>
</a-assets>
<a-entity id="car" obj-model="obj:#avent;mtl:#avent_texture" scale="1 1 1" position="0 0 5" rotation="0 -90 0" visible="true" material="">
<a-animation attribute="rotation" to="0 270 0" dur="86400" easing="linear" direction="normal" repeat="indefinite"></a-animation>
</a-entity>
<!-- <a-plane id="info" src="#infoText" position="0 2.1 3" rotation="14.5 180 0" height="1" width="2" visible="false">
</a-plane> -->
<!-- <a-entity id="title" position="0 1.9 5" rotation="0 180 0" scale="4 4 4" text="align:center;opacity:0.5;value:Lamborghini Aventador" visible="false">
<a-animation attribute="position" to="0 1.6 5" direction="alternate" dur="2000"
repeat="indefinite"></a-animation>
</a-entity> -->
<a-entity position="0 0 5" id="pedestal" geometry="mergeTo:null;primitive:cylinder;height:0.1;radius:2.5;segmentsRadial:72;" material="color:#ccc;metalness:0.7;src:#pedestalTexture">
<a-animation attribute="rotation" to="0 360 0" dur="86400" easing="linear" repeat="indefinite"></a-animation>
</a-entity>
<a-entity id="car1" position="0 2.5 5" rotation="0 180 0" geometry="mergeTo:null;primitive:plane;height:1;width:1;depth:0.1" text="align:center;color:#000;height:2;opacity:1;value:Lamborghini Aventador;width:2" material="color:#3a3a3a;">
</a-entity>
<a-entity id="car2" position="-1.5 2.5 5" rotation="0 180 0" geometry="mergeTo:null;primitive:plane;height:1;width:1;depth:0.1" text="align:center;color:#000;height:2;opacity:1;value:Lamborghini Gallardo;width:2" material="color:#7d7d7d;">
</a-entity>
<a-sky height="2048" radius="30" src="#skyTexture" theta-length="90" width="2048"></a-sky>
<a-light type="point" intensity="2" position="1 10 -3"></a-light>
<a-plane src="#groundTexture" rotation="-90 0 0" height="100" width="100"></a-plane>
<a-camera position="0 0 0" rotation="0 180 0">
<a-cursor id="cursor" color="#fafafa">
</a-camera>
</a-scene>
<script>
var car = document.querySelector('#car');
var info = document.querySelector('#title');
var car1 = document.querySelector('#car1');
var car2 = document.querySelector('#car2');
var cursor = document.querySelector('#cursor');
car1.addEventListener('mouseenter', function() {
car1.setAttribute('scale', {x: 1.2, y: 1.2, z: 1.2});
cursor.setAttribute('color', 'red');
});
car1.addEventListener('mouseleave', function() {
car1.setAttribute('scale', {x: 1, y: 1, z: 1});
cursor.setAttribute('color', '#fafafa');
});
car1.addEventListener('click', function() {
car2.setAttribute('material', 'color:#7d7d7d');
car1.setAttribute('material', 'color:#3a3a3a');
car.setAttribute('obj-model', 'obj:#avent;mtl:#avent_texture');
car.setAttribute('position', { x: 0, y: 0, z: 5 });
});
car2.addEventListener('mouseenter', function() {
car2.setAttribute('scale', {x: 1.2, y: 1.2, z: 1.2});
cursor.setAttribute('color', 'red');
});
car2.addEventListener('mouseleave', function() {
car2.setAttribute('scale', {x: 1, y: 1, z: 1});
cursor.setAttribute('color', '#fafafa');
});
car2.addEventListener('click', function() {
car1.setAttribute('material', 'color:#7d7d7d');
car2.setAttribute('material', 'color:#3a3a3a');
car.setAttribute('obj-model', 'obj:#lp670;mtl:#lp670_texture');
car.setAttribute('rotation', { x: -90, y: -90, z: 0 });
car.setAttribute('position', { x: 0, y: 0.560, z: 5 });
});
</script>
</body>
</html>