"Who earns a living by driving customers…

A transportation riddle is:

Q: Who earns a living by driving customers away?
A: A taxi driver.

The joke has been cited in print since at least 1955.

4 December 1955, South China Sunday Post-Herald (Hong Kong), pg. 17, col. 8:
Who?
Who earns a living by driving customers away?
A taxi driver.

Google News Archive
7 July 1970, The Free Lance-Star (Fredericksburg, VA), “Fun Time—The Riddle Box,” pg. 16, col. 2:
Don: There’s one man I know who always drives away customers.
Dan: Who is that?
Don: The taxi driver.

Newspapers.com
7 November 1971, The Sun-Herald (Sydney, New South Wales), pg. 91, col. 3:
HA! HA! HA!
Q. Who earns a living driving his customers away?
A. A taxi driver!
—Sallyann Wilmot, Lenah Valley, Tasmania.

Newspapers.com
15 January 1988, Hinckley (UK) Times, “Press Gang Jokes,” pg. 31, col. 4:
Who earns a living by driving their customers away?
A taxi-driver.

Google Groups: rec.humor
T
David Coble
8/16/95
(...)
Taxi Driver:
Someone Who Earns A Living By Driving Customers Away.

Google Groups: alt.humor.puns
Puns of the Weak 11-14-03 Part 2 The Puns
Stan Kegel
11/15/03
(...)
Who drives away all his customers?
A taxi driver. (Rita, 10)

Google Books
Ridiculous Riddles
By Cyl Lee
Edina, MN: ABDO Publishing Company
2004
Pg. 6:
Who earns a living by driving customers away?
A taxi driver!

8 May 2004, Brandon (Manitoba) Sun, pg. B9, col. 3:
Who earns a living by driving customers away?
A taxi driver.

Google Books
Ha! Ha! Ha! and Much More:
The Ultimate Round-up of Jokes, Riddles, Facts & Puzzles
By Lyn Thomas
Toronto, ON: Maple Tree Press
2008
Pg. 78:
Who earns a living by driving customers away?
A cab driver.

Twitter
spadoll
@spadoll
Q: Who earns a living driving customers away? A: A taxi driver!
7:59 PM · Sep 28, 2009·Twitter Web Client

Twitter
Kenneth Yu
@WYODCworld
Q: Who earns a living by driving his customers away?
A: A taxi driver.
11:41 AM · Oct 28, 2009·Twitter Web Client

Twitter
Q101 FM - Merritt
@Q101Merritt
Brian’s Joke of the Day: Who earns a living driving their customers away? A taxi driver! http://bit.ly/16anwQ
12:38 PM · Nov 10, 2009·Facebook

Twitter
Dr. Jerry Paz
@DrJerryPaz
Who earns a living driving customers away? A taxi driver!!
2:23 AM · Dec 19, 2009·Twitter Web Client

Google Books
Just Jokes
A Collection of Kids Jokes
By Phyllis Agles-Johnson
Raleigh, NC: LULU Publishing
2010
Pg. 28:
Who earns a living by driving his customers away? A taxi-driver.

Twitter
Guy userman
‏@shadowling7777
@AdmiralHippie But Lawli, don’t you know taxi drivers make their living driving customers away?
1:15 PM - 14 Mar 2016

Twitter
redgirl22
@redgirl22
Who earns a living driving their customers away? A taxi driver. #joke #lol #funny http://itunes.apple.com/app/id892525499?at=11lv8V&ct=LMAO
9:58 AM · Aug 8, 2016·Twitter for iPhone

Reddit—Cleanjokes
Posted by u/chacham2 April 25, 2018
Who earns a living driving their customers away?
A taxi driver.

Twitter
Robert Wilkinson
@robertwlk
I tried running a taxi business but I found that I was driving customers away.
3:59 AM · Oct 5, 2022·Twitter Web App

“Who earns a living by driving customers away?”/“A taxi driver.”