There's some more from Speatzel on there, including, unfortunately, an admission that the police believe the case cannot be solved unless someone with direct knowledge comes forward.
Here's what he had to say about Runkle:
"We have looked at him closely. We have done a lot of work regarding this individual. And, obviously, there's no indictment."
I still believe some good old-fashioned footwork can solve it. Test the right car. Search the places he would have gone. There's still more you guys can do.