I was doing a bit of a "beyond the boundaries" tour with the tab key last night. I noticed there is a golf course near, I think, the Landgraabs property. I also found a mini mall or diner type property, which had a big green dinosaur statue next to it, I think it was Oasis Springs that had that. I am going to look for them again today and get screenshots. I know someone posted a pic of a drive-in theater yesterday.
I wonder if these will be areas that will eventually be accessible. Although I don't see what good a drive-in theater is with no cars.