Excerpt: ""Say Nat, I thought that this was to be a pleasure trip?" Joe Hartley, the perspiration beading his round, good-natured countenance, pushed back his sombrero and looked up whimsically from the punctured tire over which he was laboring. "Well, isn't half the pleasure of running an auto finding out how many things you don't know about it?" laughingly rejoined Nat Trevor, the eldest and most experienced of the young Motor Rangers, as they had come to be called."