I believe they actually do have that kind of mode. When you are riding in one of these cars commercially they have an “end ride” button that cancels the route and gets the vehicle to pull over.
I think most clogs are when cars are mapping so I’m not sure if they either don’t have enough data to offer that when they get stuck (depends on how much they depend on mapping to implement the feature). It could also just be that they figure a stuck car is too messed up to reliably pull over without causing more problems, so to err on the side of caution they don’t use that feature.
I was thinking the same thing. The car on the tarm/light-rail track clearly don't have any concept of being in the way. It seems to be the same case with the car blocking the bus in the first example. Neither of those systems seem to have a notion of reversing or pulling over to make space.
The ability to "read the road" seem to leave a lot to be desired.
What they seem to be missing is a “get out of the way” path-planning mode when it doesn’t know how to proceed.