Car levels autonomy is fake. Everything including Level 3 is not a real autonomy it is hard rules + some reaction to the world, and everything above 3 is autonomy with just s slightly human security guardrails to attempt the real autonomy.

At this moment where we have human who just sit there before verify enough 9 after comas of error rates, the entire level conversation is dead. It's almost a binary state. Autonomous or not.

Similar happened with software levels. Even Level 2 was sci-fi 2 years ago, 1 year away from now anything bellow level 5 will be a joke except very regulated or billion users systems scale software.