Spoiler alert: it was the locksmith in front of whose shop the machine was allowed to exist (rent free)
https://twitter.com/saeofdoom/status/460157462197198849?s=20
It was a cute novelty, and if you're not picky it's a fast soda, but honestly it was just stocked with cheap, off-brand gross soda. Would have been genius if occasionally it gave you something interesting (or at least good).
Thanks to it, I still have to try strange sodas when I am traveling--especially abroad. It's not always good, but it's always fun.
These days, I haven't had any soda in years. 35+ grams of sugar per can is a terrible idea.