Inevitable? That depends on how you define self-driving. From the sound of it, all these trips people describe took place in nice weather. Can you even get a Waymo when the sun is not shining? Has anyone ridden one of them in a heavy downpour or even moderate or light rain? What about snow?
Those things would require AGI, which has been "right around the corner" for how many years now? On top of that, it would have to operate with zero lag, like a human driver. Anyone who has driven for any length of time has screeched to a halt and only later realized what they were stopping for.