I have seen several stories like this - the janitor, or secretary, or whoever is actually a trusted individual who is the true judge of character. To me, it seems implausible, more of a "feel good" story, but it also seems ill advised. Does the driver know he's part of the loop? Does the driver attend the debrief? Does the driver distinguish between great, normal, sub-normal, and bad social skills? What portion of jerks would be jerks to a single specific tax driver? Even a big jerk probably isn't a jerk to everyone all the time, and even a nice person may be rude or obnoxious occasionally.
Stories like this also remind me of the "Magical Negro" trope where a simple but helpful black person offers sage advise or magic to help the protagonists out of a jam. These "The taxi driver was your real interviewer" stories don't (necessarily) have a racial element, but it's the same, magic wisdom of simple lower class folk idea.
When two people don't get along it's hard to find the objective truth by talking to one of them. Maybe the candidate didn't talk to the taxi driver because he was nervously thinking about the interviewer and that came off to the driver as aloof or arrogant. Maybe the driver didn't like the candidate's race, gender, experience, age, etc. Maybe something was said that was misunderstood by one or both parties. Point is - it's a very weak test.
Stories like this also remind me of the "Magical Negro" trope where a simple but helpful black person offers sage advise or magic to help the protagonists out of a jam. These "The taxi driver was your real interviewer" stories don't (necessarily) have a racial element, but it's the same, magic wisdom of simple lower class folk idea.
When two people don't get along it's hard to find the objective truth by talking to one of them. Maybe the candidate didn't talk to the taxi driver because he was nervously thinking about the interviewer and that came off to the driver as aloof or arrogant. Maybe the driver didn't like the candidate's race, gender, experience, age, etc. Maybe something was said that was misunderstood by one or both parties. Point is - it's a very weak test.