Autonomous Cars Were Predicted In A Wizard of Oz Book

I don't think we've ever really covered much about L. Frank Baum's famous stories about the land Oz here before, mostly because the stories (and the famous movie) are pretty thin on cars. But that's not to say there aren't any things like cars. In fact, in one of the later Oz books, there's something that sure as hell seems a lot like some of the autonomous cars being developed today. Only, you know, much more weird and magical. This browser does not support the video element.