Chances are, unless you are a devoted Jack Benny Show fan, you will not know of the character, whom I call the "Taxi Driver." From where I am in the show (1948) he has only shown up twice. I find him hilarious.
He's not just a taxi driver. He's a taxi driver who hates to say "goodbye."
He's played perfectly by... well, I don't know who plays the part. But man, is he funny!
(From episode #659, 48-06-06 Jack Leaves For Detroit)