Drives down the highway, and it it decides there's something it doesn't understand, it stops driving. Which is not the same thing as "stops the vehicle" - in so

Drives down the highway, and it it decides there's something it doesn't understand, it stops driving. Which is not the same thing as "stops the vehicle" - in some cases it's actually a "f*ck it, I'm out, now you drive the car yourself". Anything fits within "autonomous except when not autonomous" - even the crudest cruise control.