What metaphors are used in The Art of Racing in the Rain: A Novel by Garth Stein?

In Chapter 30, Enzo's use of metaphor comes into play when he considers the battle that awaits Denny, Trish and Maxwell. Denny is an expert driver, which corresponds metaphorically to the way Denny "drives" his life. If, in a race, Denny Swift is far ahead of his rivals, it follows that the same would hold true for his daily life. The stakes are even higher when considering how wealthy Eve's parents are.