Sure - but are these clue tells likely to come up in what the interviewee considers a chance encounter - riding in a taxi - to a job interview (thus probably dressed in an uniform way), when their mind is likely on other things?
Also, wouldn't the taxi driver also have to know about these clues?
With all respect, I think the scenario "Taxi driver planted/used as an interview prescreen is openly anti-gay and sniffs them out." is a bit contrived.
