The question is how many accidents (if any) self driving prevents with respect to average human drivers.
They will not function in high grass, I guess from my experience with different parktronics.
The best "off road" demonstration of self-driving and/or AI assistance I've found is this: https://media.jaguarlandrover.com/news/2016/07/jaguar-land-r...
Note they avoid going into grass. Human can deduce trails from grass profile, AI? I don't think so.
Will you count an inability to reach a lakeside as an accident? I guess, no.
AIs need training before they can do things.*
*They just might be learning to do things without being trained based on the emergency behavior I see in LLMs.
As for "emergency behavior" (emergent behavior, I guess) - we do not know how LLMs are trained. Thus, what you consider "emergency behavior," could very well be a part of training.