There are highways tangled as far as the eye can see, most of them elevated, looping around each other, dipping and rising and making long, wide curves. There are some cars but somehow the large group I am in is able to walk on them without too much trouble. We all carry weapons and frequently encounter other groups that we must shoot. The guns are only air rifles, though-- it hurts when you get tagged, but the majority of shots don't really put you down.
At least that's my understanding until I see a guy near me get hit in the eye with a skinny, three foot long bolt. After our group redoubles our efforts and scatters the assailants, I pick up a strange crossbow off the ground. It's very light, made of red and black plastic, and folds up very easily. The game has changed.