Call me paranoid. We try to take the puppy as many places with us as we can. About the only place he doesn't get to go is the grocery store. The first couple times we opened the cargo area of the jeep and told him to "load up!", he was a bit scared, but he caught on real quick. Now we can't open the door on any of our vehicles that he doesn't load up and quickly. I hope he doesn't just jump in anyone's vehicle. He'd be a cinch to steal if he does.