As freeway/motorway driving is easier, one would have assumed self-driving vehicles would already be using them. However, the infrequency of critical events means there is less training data, and the higher speeds of travel are a challenge, too. No more, it seems.
The same will one day be true for outlier use cases like snowy roads, etc.
Like all technology, self-driving vehicles will be adopted on an S-curve, where one day their adoption and use will quickly become widespread. This is another sign that the day is ever closer.
yea I agree that is how I had read it at first glace as well!