Perseverance "self drives" at 0.1mph on a nearly flat, static landscape with zero other threats or moving objects.
(Sure, it's a hostile landscape with regards to dust/temperature/radiation. And getting to Mars and landing safely is a fiendishly difficult task. But those aren't concerns of the self-driving system...)
The problem space is truly not comparable to that of a drone that needs to navigate an actively hostile, evolving environment in three dimensions at two orders of magnitude greater speed.
Autonomous drones, yeah, well... https://www.tudelft.nl/en/2025/lr/autonomous-drone-from-tu-d...