And that's a huge difference for consumers. I would never use a self drive feature where I am still responsible, that's pointless and would just create more anxiety for me.

They're not confident enough to assume the risk if you look at the requirements you have to meet to use it. Under 40MPH on approved freeways in heavy traffic during daylight hours with clear skies and clear markers painted on the ground. This is essentially useless for a majority of people as it's just going to inch ahead for you in gridlock traffic provided the road meets all the other requirements.