
There are so many places in the area where he could have disposed of her body and it's almost guaranteed she would never be found. We have acres upon acres of state lands, countless bodies of water to choose from, abandoned homesteads with old wells... He grew up here, he knows the area well. I feel that he is only beating this drum to sustain his relationship with his children.
MOO.
I think he used Michele's van to transport her to a far away landfill somewhere. He also may have buried her somewhere in the expansive land of Upstate New York within an hour or two away but the way Cal acts to me indicates he's confident there's nothing left of Michele to find.