Automation is sometimes great, but it would scare people if they knew how often their cars are grossly overfilled by places that use this approach.
This problem is not limited to the quick-lube places with the 18 yr. old kids. It also exists in dealerships of all varieties, both domestic and foreign.
If you have someone else change your oil, pull over after you exit the lot, let it sit awhile then check it. The idea here is not so much to see if the oil is exactly on the full mark, but to see if it's 5 inches over the top of it.