public float moveSpeed=5f;



// Use this for initialization
void Start () {

}

// Update is called once per frame
void Update () {

    if (Input.GetKeyDown (KeyCode.Q)) {
        GameObject objet = new GameObject ("objet");
        //objet.transform.position = new Vector3 (1, 1, 1);
        GameObject cube = new GameObject ("cube");

        cube=Instantiate (objet, new Vector3 (1, 1, 1), Quaternion.identity);

    }

cube.transform.Translate(Time.deltaTime*moveSpeed,0,-Time.deltaTime*moveSpeed,Space.Self);

}