I wrote a story for kuro5hin.org (RIP) about the passenger who called me from jail, because he remembered my phone number.

Who Are Your Lifelines? - https://www.taxiwars.org/p/who-are-your-lifelines.html (2015)

That passenger recently reappeared on me. He's still "imaginary", and is still working on getting a plastic ID card. Part of his predicament has to do with [redacted]. Supposedly. In 2016, this passenger's sister told me some of the details about how her brother got trapped in his little emotional rut, when he was about 18 years old. I still have the postcard he sent me from jail, circa 2016. He greatly appreciated my efforts to keep him alive while on the jail's starvation diet.

I exercise my mental phonebook regularly on account of this passenger.