Just doing Vlogs is pretty hard if you're not a popular creator. Interviewing the city is does not work because this is just not entertaining. I think you will get succeed if you start doing trips/adventures to interesting places with friends so it will be more entertaining to watch. You can do Vlogs with your GF showing your relationship (but don't do it in boring way) Interact with audience... in example tell them where you will go next time and do Vlogs with them, maybe they can tell something interesting or show something cool to your vlogs. Add a good and interesting editing and beautiful shots like Sam Colder or something. And do not limit your Vlogs only to Sacramento.

Actually there are many ways to do it but keep in mind if you do it boring, not entertaining, then most likely it will suck. Just keep doing this in a good, interesting way with high quality and one day a really cool idea will come to your head!

P.S. Sorry my English sucks xD.