Super cool! I had a very similar idea recently: I wanted to have on-demand podcasts about one's surroundings as you explore a new place (also taking into account a small list of user interests). I did a prototype [1] with the OpenAI APIs but the generated results were too shallow and not as interesting. It seems you prepared it with more carefully curated content, smart. My city is covered by Audiala, will give it a try!

[1] https://github.com/geonnave/roadcast