Her cat crossed the interstate several times, went to a construction site, and various other places that had me surprised her cat was still alive. Her cat went as far as a mile away, into the nearby woods where their were coyotes and other predators that would a snack of her cat. 24 hours later she had the proof she didn't want. As proof, she put a GPS tracker and little camera on her cat. I once had a neighbor who was thoroughly convinced their indoor/outdoor cat never strayed further than a couple houses around.