For me it's off all the time, only in exceptional circumstances like when I'm on the motorway at 3 in the morning and there's zero cars around.
I just find the autopilot/acc experience very underwhelming and requires a lot more concentration than just, you know, driving like a normal person.
You don't know what it (the computer) knows and how it'll react and if you have to intervene. And by that time that you may have to intervene...precious seconds have gone by and too late by then.
May be I'm just being paranoid![]()
The whole point of the system has better reflexes than humans. The main flaw with them is false positives.

