Amazon will have to build efficient container or trailer management system if it has to use self driven trailers. May be this will give a little better idea on what I am talking about. <a href="http:&#x2F;&#x2F;fleetowner.com&#x2F;blog&#x2F;aiming-self-driving-freight" rel="nofollow">http:&#x2F;&#x2F;fleetowner.com&#x2F;blog&#x2F;aiming-self-driving-freight</a>