I realize it adds more regulation...and I'm sure there can be a middle ground. But I foresee a scenario where an OTA update is pushed and the next morning there are car crashes everywhere.
Tesla sells a feature set that sounds slightly more advanced on paper, but in practice the benefits are pretty comparable.
"I think that's currently the case for Tesla, selling the only commercially available semi-autonomous [electric] car ATM."
FTFY
Not necessarily one as simple as OTA updates whenever the manufacturer feels like it.
As far as regulations preventing use of the tech, if level 2/3 systems end up causing more crashes than human drivers, we shouldn't allow use of them.
Again it's an if, but lots of people drive long distances and don't enjoy it. An autonomous vehicle would relieve them of the driving task. It would also add a transport option for people that are unable to drive long distances.
It's likely to reduce the cost of taxi like services, as drivers are currently a significant portion of those costs (autonomous driving turns pricing into almost a pure calculation about return on investment).
I guess you might dismiss those as not being "legit" enough since they are all contingent on the systems working well.
Currently, there are two lanes of parked cars, plus two sidewalks and (usually) two lanes for traffic.
Autonomous driving would allow cars to park themselves off-site, such as underground garages a block or two away. That alone could double the space available for pedestrians, or other uses of public space such as outside cafes, green spaces etc.
The ability to quickly call a vehicle, adaptable to your current needs (minivan for family on Saturday, open two-seater for a summer date) could also start a major move away from car ownership, reducing the total number.
Improvements in traffic management (shorter distances between cars, coordinated starting/stopping, interleaving intersections) also have the potential to allow us to reduce 4-lane roads to just two. We might even find ways to make one-way streets work for most residential area. All this again frees up public space.