SyncCube

using UnityEngine;
using System.Collections;
using UnityEngine.Networking;

public class SyncCube : NetworkBehaviour {

    [SyncVar]
    private Vector3 syncPos;

    // Use this for initialization
    void Start () {
        syncPos = transform.position;
    }

    // Update is called once per frame
    void Update ()
    {
        if (isClient)
        {
            transform.position = Vector3.Lerp (transform.position, syncPos, 5 * Time.deltaTime);
        }
        if (isServer)
        {
            transform.Translate (Vector3.forward * Time.deltaTime);
            syncPos = transform.position;
        }
    }
}