We're not building this as a feature quite yet, but we definitely can build a scenario where you have an old diesel tractor. We actually work with somebody like an Aurora or somebody else to kind of build a mild layer of autonomy on the trailer so that it can move itself forward and out of the yard. The nice thing is that because it's on a very geofenced and confined area and it's below, let's say three miles an hour, the problem of autonomy kind of becomes pretty straightforward.