oh no. boycats run away a lot!, but usually not far. put up signs if you can, that has worked well for me in the past. my best bad cat ran off a half dozen times and usually I would find him just by walking around the neighborhood calling for him-- he would come running, all, thank god you're finally here. and esp. in coyote-filled neighborhoods, people are quick to take cats inside for their own good.

thinking all the best thoughts for you!