We don’t have a ruling on that - but we do have it for Blackguard/Snitch:
Once per run, you may expose an unrezzed piece of ice when you approach it. You may then jack out.
Which is exactly like Drive By - ‘Expose … Then, X.’
The ruling is precisely as I have outlined through nested triggers: the rez decision happens first, then the jack out.
Thus, Drive By and Blackguard does combo (and it’s painful for the corp). And Drive By does work with Aumakua.