How does Ted Conover use imagery in Coyotes: A Journey Through the Secret World of America's Illegal Aliens?

Imagery:

"A group of prostitutes we had passed out a store in the morning's drive out here had been pretty too. Somehow, I had not expected to find beauty in this town made of planks and corrugated tin."
The Gringo and the Mexicano, p. 4

"Mexicans seemed to look at American men in much the same way we often look at Germans: they were precise, efficient, somewhat cold, too serious. It was interesting because, impatient toward the end of the drive, that was how I had felt with them - I was pushing the speed to the Squire's limit, not talking, maybe a little angry at how long it all was taking."
Phoenix to Florida at 25 MPH, p. 139