I get where you are coming from and you are correct. This is, up to a point, a PR piece of Waymo and we should take that into account. But they are pretty trans

I get where you are coming from and you are correct. This is, up to a point, a PR piece of Waymo and we should take that into account. But they are pretty transparent about what they are doing. You just have to read the report. And for their metric, which rounds to "all distance travelled in the interesting ZIP codes", they are succeeding. What I'd take away from this is: If you give them a different metric, they can optimise for that too and they will end up being better than humans. That doesn't answer the questions: 1) Is it worth it? (I.e. what does it cost to achieve that) and 2) Is a Waymo better in any situation? I guess they don't have the answer to either yet. I'm pretty sure their cost-per-mile is still dropping like a rock (probably though not fast enough for their accountants) and they haven't reached all situations yet either. But I wouldn't bet on "because it's too hard", but rather "because we didn't get there yet" (and yes, they will have started with the easy part, as they should)