there was an institution my son went to for therapy for his various handicaps, and one of the major taxi routing solutions in Denmark had the route wrong, I think the one based on Google maps actually, so when you called for a taxi it always drove nearly a block away that you had to walk through a couple of back alleys to get to. And then the taxi driver would call me up and complain I wasn't there, and I had to guide them to the place where they actually had to be at over the phone.

Sometimes they were not capable of following the instructions though.