Put him on the internet, flyers, call the local pound, talk to the neighbors, local vets, local stores, anyone who will listen. I would probably drive up and down the street calling his name. He has got to be cold and I am concerned he wouldn't survive one night in the open, much less two. I hope he is chipped so if someone does find him, he will be returned. Praying for his safe return. I can't imagine a worse nightmare...