Q: What States have maps?
A: California, Oregon, Arizona, Hawaii, and Nevada. There's a poll where you can help decide which state needs a map next.
Q: How do I view this in the Google Maps app on my phone?
A: On the main page of this site on your computer go to the map of your choice and click the star in the top right corner. Then open your phone and go to Google Maps, open the side bar, click [My Places] then scroll down to favorites and select the map.