from older article - June 30th, 2017
http://www.forestparkreview.com/News/Articles/6-30-2017/Human-remains-found-in-abandoned-car-/
Year 1996 is just starting point. Jane Doe could have been deceased anywhere between then until 2016 possibly even early 2017.
I have to somewhat disagree that this car is the same as abandoned building. Car was owned and parking plot has been paid for until owner's death. Car was locked and they had to break into it to retrieve trash can. Jane Doe is definitely in some way connected to the owner. What is interesting though that trash can was in the back seat and not in the trunk and also that owner did not get rid of it for very long time... it might point to some emotional attachment. Owner was probably on the older side (if he died of natural causes) and probably of lower socio-economic status due to very old black sedan, probably Oldsmobile which was described as in very poor condition. Owner very likely did not live too far from the car, at least in initial years when car was brought there and knew in some way this neighborhood. Residents knew about owner's death - if he was complete stranger just renting they would not know. Whoever owner was I am very sure that police going through this person's life with tooth brush comb as we speak.
Resemblance of some suggestions are uncanny, however tip of the nose on sketches of
skeletal remains as far as I am aware, is always just an artist guess. (but Carl might clarify further)