Perhaps their interests are in areas close to where they work. It's possible that an area just a little further out has better traffic arteries and is actually a faster commute. At least let them know, as they may want to expand their search a bit.
In your interview, they may tell you that a primary criteria is a large lot. They have children, and want them to have room to play outdoors. You happen to know that there is a home or two in an area they didn't mention that have lots larger than the norm in that subdivision. You will do them a service to mention this.
In short, before you start the travel, do the research.
