The way Showalter reveals he really doesn't know what he's talking about when he and Grimsrud enter Minneapolis:
Showalter: That's the IDS building, the big glass one. The tallest skyscraper in the Midwest, after the Sears in Chicago, or John Hancock Building, whatever.
Then Showalter gets on Grimsrud's case about not contributing to the conversation:
Showalter: Have you ever been to Minneapolis? Grimsrud: Nope. Showalter: ...Would it kill you to say something? Grimsrud: (annoyed) I did. Showalter: "No"? That's the first thing you've said in the last four hours. Thats a fountain of conversation, man. That's a geyser. I mean, whoa, daddy. Stand back, man. Shit. I'm sittin' here drivin', I'm doin' all the drivin', whole fuckin' way from Brainerd, just tryin' to chat, you know, keep our spirits up, fight the boredom of the road, and you can't say one fuckin' thing just in the way of conversation? Oh, fuck it. I don't have to talk either, man. See how you like it. (Beat) Just total fuckin' silence. Two can play at that game, smart guy. We'll just see how you like it. (Beat) Total silence.
Showalter in a ski-mask, trying to look through the house windows even through his ransom victim is right in easy view.
So he angrily says, 'Oh I get it, so you think I'm some kinda crazy jerk for askin'!' only he doesn't use the word 'jerk'... And then he calls me a jerk, and says that the last guy who thought he was a jerk is dead now. So I don't say nothin', and he says, 'What do ya think about that?' So I says, 'Well, that don't sound like too good a deal for him, then.'