[He has to do a double-take when he sees the parkour. Yeah, that's definitely something that would've happened in the Batman show. People back home probably do that, too, but it's not really something Jason has ever seen done in real life. For one, where he lived there weren't buildings nearly tall enough to inspire such parkour]

Nope, never seen a place like this. Closest I can think of are cities like Chicago and New York. My friend Nick's from Chicago; he'd be able to tell more than me if it's like this.