Um... there's a whole lot different with airplane autopilot vs being on the road.

Autopilot is normally engaged when there's "nothing". Clear skies rarely have "sudden" obstacles. It's a no-no during severe weather or flying through mountains. I had a fascination with watching airline disaster investigations when I was making regular flights for a year. Around 70-80% of accidents were caused by relying on autopilot during sub-perfect conditions.

Using airplane autopilot as a case to use Tesla autopilot is a terrible, terrible analogy. Let's throw in an extra terrible.