This is a great premise, and the game comes with both background information and storytelling prompts for doing a game in supernatural Manila, as well as links you can follow for further reading.

If you're like me, you probably *will* need to follow those links and read up on the stuff the game talks about before you run it.

If not, you may still need to do a little narrative planning before running it---it seems like it'd really benefit from the GM planning out a table of people / quests for the cabbie to encounter---but again, the game concept is super strong and I think the little bit of extra work is worth it.