Another model is to build autonomous convoys. In this model, a human is the leader and the follower trucks have the much simpler task to “just follow the lead truck.” The trailing truck drivers can rest and switch to being the lead truck at predetermined intervals. Finally, the human is available for the off-highway driving, so the whole loop is closed. This model produces a use-model which is significantly simpler than the hub-to-hub autonomous highway model, so an AV Safety case should be more tractable.