How does Ron Suskind use imagery in A Hope in the Unseen: An American Odyssey from the Inner City to the Ivy League?

Example of Imagery:

While Barbara is delighted that Cedric, so tightly wound yesterday, is now buoyantly bouncing as he walks, an unwanted self-consciousness is welling up inside her. She'd rather not notice the cars other parents are driving, the clothes they're wearing, and the ease with which they move. She knows, of course, that the typical Brown parents probably went to college and on to some professional status that their offspring, by virtue of this Ivy League acceptance, are now bounding toward. Here, it's a day for her to be proud, but she can't help staring at them - these smiling, polished people - and overhearing their jaunty melody of generational succession: a child's footsteps following their own, steps on a path that leads to prosperity's table and a saved seat right next to Mom and Dad.