Unless she was attacked/killed in a motel or hotel? And they had to get rid of the body quick?? Shrugs shoulders...It does seem like a risky place to dump her on a busy interstate. Maybe they didn't have time to place her anywhere else, as they had to be somewhere at a particular time, like a job. If this person was stationed at Fort Knox, there's mandatory times they have to be there in the morning, for formation, run PT, whatever, so maybe it was a time valued thing.... in my opinion...
Just to add to my post......if it was a motel or hotel ,particularly local, that would be one way to identify this perp because I think credit cards are the norm now to rent a motel room.....and if the shower curtain is missing....and this UID has been in the news, that is one way to catch this perp.......