Sweetheart29--Remember that he's not only got to fool these women and the neighbors but he's got to get past an alerted LE system. He's raping women at 4-6 am. Those are the dead hours for LE. They're going to check any stranger sitting in a car just to stay awake or give them somebody to talk to for a minute. I know small town Texas. LE are friendly. If they see a surveyor or cable guy working off some plans or a notebook, sitting in a quiet neighborhood at 5 am, they're going to pull up and say hi--and to check him out.
I'm going to be really surprised (when this guy is caught), if we don't find out that LE did cross his path. Think about it, if you're LE driving around one night and stopping to say hi to some service kind of guy AND you learn on your next shift that Ms. Bessie got raped and robbed, you're going to remember the incident and have a good description of the guy. I would think LE use their skills when they order at McDonald's. Do they? Can Deputy Troy tell you what the kid looked like who just handed him his hamburger? Can Sheriff Jones tell you what the man looked like that he stopped and said hi to last week during the night?
Another thought. Are there newspaper services in these areas? Where I live, in Southern Oregon, we can get the SF Chronicle and the Portland Oregonian delivered (both cities are 300 miles away) by a special news service. They throw the papers at 4-5 am. They are completely separate from the local newspaper delivery people. Could there be an Austin American Statesman or Houston Chronicle or other big paper delivery service which might not be seen as odd in neighborhoods at this time of day?