Something just hit me about the location of the house. Perhaps WH was looking for a site he could leave a body. That road, judging by the videos in the media, is a pretty busy road for a rural area during the day so I imagine a lot of people use that road to get from A to B. Perhaps he was looking for a place and did a double take at that house. According to the media, it looked "dilapidated" and had "waist-high grass" which points to it being an abandoned property.
Now, say he did a double take and made a u-turn to go drive by it again. Maybe it was on the opposite side of the road so he had to turn around once again to pull to the side of the road and really look at it.
My question is, would that kind of strange activity/movement be able to be tracked by cellphone pings? Someone kind of circling a certain property and perhaps hovering over it?