No way to tell if a test driver is driving or if the car is driving. But the problem with the modern big-data approach to training autonomous driving AI is that there's probably a huge amount of terrible human driving included in your training data. Ideally you'd go through all the training data and cull the kind of driving you wouldn't want an AI to do. But ain't nobody got time for that!
They have been training in Houston for a couple months now. It was reported that Houston will be second city (after San Francisco) to go live with Gravity/Nuro/Uber taxis. Most testing appears to be inner city (inside Loop 610) only, so that will probably be limit of early Lucid taxi availability. Waymo is currently limited to inner city area in Houston also.