Steve & Veronica
Sadly, that was one of the more plausible things Steve could imagine happening. He'd fought an army of evil robots. A roller coaster coming to life didn't seem impossible.
He laughed, though, because that was pretty unlikely, and making it into a joke was the only way anyone had to fend of the weirdness of this place. "Okay, well. I give you my word. If anything tries to eat you, I'll clock it one."