Is it possible to climb the Great Fourth Wall of Adstring lining the area of Everything-Not-Monster-Infested?

Are there any abandoned large vehicles lying around, like buses, trucks, etc.?
PS: If there is, can they be torn apart/modified if it doesn't move?

What be the general opinion of giant sentient bug OC's?

Not really a question, but I'm assuming there isn't random NPC's running around the safezone?