0: vulnerable road users, eg pedestrians and bicyclists
With the most complex, context-aware, intuitive computer in existence. In addition to eyeballs that are dramatically more capable than any camera Tesla is using.
For human flight, we borrowed the wings, but made them fixed and added propellers, to cheat the mechanical incompetence.
I wouldn't be shocked that radar/lidar/sonar/whatever sensors are what it takes to cover the incompetence in matching human brain+vision.
Heck, use multiple "brains" and give each veto power on moving the vehicle. Supposing that stopping doesn't kill you, that would at most frequently annoy the driver, and sometimes save his life or someone else's.
At least today we probably could build a craft that flies by flapping its wings but what would be the point?