I cannot recall if fingerprints were found in the vehicle. Does anyone remember?
I, too, have wondered why the vehicle was left there rather than in the desert. It just struck me that there are houses at that exit. Could the person who left the vehicle there know someone who lives in the area? I'm not sure what the story would be for showing up suddenly, though. It's just odd to me that that was the location when there are a million places in the desert to leave a car. I suppose it could have been done to draw attention in the opposite direction from where Audrey and Jonathan might be found. I think they are in the desert. :-(