Is it possible that little Sky was in the car deceased that morning? There is something that rings strange to me... Dad says that Mom lived in that neighborhood before. Could she have a close friend that lives nearby? Is that why she was not in the usual route to the hospital? Could she have stopped in that particular area for a reason? Could the person that LE is looking for that helped her live very close to the spot that the car "ran out of gas"?
If little Sky really was in that car, wrapped in a blanket, and someone took him out and immediately put his little body in their car (still wrapped in the blanket), would the dogs catch a scent? I think I heard one time that if the child does not touch the ground and is wrapped in a blanket, there may not be a sign for the dogs to find. Just thinking out loud here.