It's impossible to tell the level of autonomy from this article. What was shown in this article could qualify as Level 2, 3, 4 or 5.

To provide proof of Level 4 autonomy with video (in certain conditions), it would need to show adverse and exceptional conditions, such as terrible weather, accidents ahead, all routes to destination blocked or any other situation short of a force majeure disaster and then provide a safe contingency for that.

In San Francisco, that would probably mean finding a parking lot where it is safe to wait for assistance from your Transport Service Provide(tm). In rural northern Europe where I'm from, it would mean parking on the side of the road and calling your wife/mom/friend to pick you up :)