At least they knew that an apostrophe wasn't appropriate...
I snapped the attached pic of a Raleigh, North Carolina, taxi this morning, believing that you both might enjoy it.
Improper punctuation in signage has become so commonplace that it seldom seems noteworthy anymore. It takes real imagination, courage, and creativity (that, or perhaps just shocking levels of ignorance) to come up with unusual errors, especially when the error involves apostrophes and nouns. I believe this taxi is a real standout in the category of innovative use of possessive noun punctuation.