I took a waymo on a highway not too long ago. There was a lane closure causing a backup about 100 yards ahead of two highways merging together. Someone had programmed the waymo to always be in the right lane on the highway. Before the merge was complete the waymo jumped accross solid white lines to try to get right. It then continued to push right until it was in the right lane.

The biggest issue with this was the lane closure was the right lanes and they were pushing everyone left so the waymo then had to merge with traffic back all the way to the left.

Also, the way the waymo switched lanes in stop and go traffic was not how a normal car would, but almost by turning fully right and then left to get into the lane.

This is where the incident occurred. You can see where it jumped across the white lines. https://maps.app.goo.gl/QMS4TJArJdEmj8VTA

I have not taken one on the highway since. I do think it is the future, but it hasn't figured out complex stop and go situations yet.

I've only used them a handful of times when Lyft rates were insane/too long and one instance it was driving erratically, and the other it ended up stopping me 5 blocks away at first. And with the Michael Scott water nonsense lately, absolutely would not trust that moving at high speeds.