I've thought about that. How could that happen? I needed a rental once and the only the vehicle they had available was a sub-compact and a pick-up. A rental agency where the person uses the vehicle between that night and before opening the next morning? I wonder how much agencies track mileage. A person out-of-town or out of the country and this killer is house sitting with access to the truck? A military member, active or reserve, deployed and this killer has custody of the truck? Ft. Hood and the installations around San Antonio are 3 hours away and NAS Corpus Christi is 4 hours. When I deployed twice I left my car with family over a thousand miles away and another time with a friend 6 hours away. Had my car been used in a crime I would not have known. The owner was in the hospital at the time? If this truck is back where it belongs and is hours away or even on the other side of Houston now it is out of sight and out of mind now with regard to an innocent owner. And a person wasn't killed in the truck and it wasn't used to move Elizabeth's body so forensic evidence is of little use. If LE does find a POI and say the POI's DNA is in the truck he (or she) simply states they've been in the truck several times. Any gunshot residue on the seat or carpet can be explained by frequently shooting at a friend's farm, at the gun range or hunting.
I can't believe we have yet another case where there is video or a photo and yet it is of little value in leading to the killer.