It's also (and this is important for Tesla owners to keep in mind) not-italicized-technically level 2.

As in, "This system is known to degrade in ways that require immediate human manual intervention under risk of serious injury or death. Do not operate it without constant driver supervision and preparation for takeover."

In the automotive industry we called this "level 2.999." I've moved on from automotive now, but in my experience nearly all of the new vehicle features in development, big or small, are developed at that level.