Conducting (some, specific/easy) trips with no action is easy. Even conducting most trips is likely doable within the near-ish future.
“Full autonomy” (at least to me) is being able to do any trip. Not just some or most. Because the key benefit is that the car can be empty, or the passenger drunk/blind/...
That’s what I think the crucial difference is between their marketed “full self driving” and true full autonomy.
