That might happen only once or twice in the course of a day’s driving. When it did, Dad had one invariable formula; he would shift the cigar a bit in his mouth and mutter: “Damn fool!” It was the only cuss-word the one-time mule-driver permitted himself in the presence of the boy; and it had no profane significance—it was simply the scientific term for road-hogs, and drunken men, and women driving cars; as well as for loads of hay, and furniture-vans, and big motor-trucks which blocked the road on curves; and for cars with trailers, driving too rapidly, and swinging from side to side; and for Mexicans in tumble-down buggies, who failed to keep out on the dirt where they belonged, but came wabbling onto the concrete—and right while a car was coming in the other direction, so that you had to jam on your foot-brake, and grab the hand-brake, and bring the car to a halt with a squealing and grinding, and worse yet a sliding of tires. If there is anything a motorist considers disgraceful it is to “skid his tires”; and Dad had the conviction that some day there would be a speed law turned inside out—it would be forbidden to drive less than forty miles an hour on state highways, and people who wanted to drive spavined horses to tumble-down buggies would either go cross-lots or stay at home. II A barrier of mountains lay across the road. Far off, they had been blue, with a canopy of fog on top; they lay in tumbled masses, one summit behind another, and more summits peeking over, fainter in color, and mysterious. You knew you had to go up there, and it was interesting to guess where a road might break in. As you came nearer, the great masses changed color—green, or grey, or tawny yellow. No trees grew upon them, but bushes of a hundred shades. They were spotted with rocks, black, white, brown, or red; also with the pale flames of the yucca, a plant which reared a thick stem ten feet or more in the air, and covered it with small flowers in a huge mass, exactly the shape of a candle-flame, but one that never flickered in the wind. The road began to climb in earnest; it swung around the shoulder of a hill, and there was a sign in red letters: “Guadalupe Grade: Speed limit on curves 15 miles per hour.” Dad gave no evidence that he knew how to read, either that sign, or his speedometer. Dad understood that signs were for people who did not know how to drive; for the initiate few the rule was, whatever speed left you on your own half of the highway. In this case the road lay on the right side of the pass; you had the mountain on your right, and hugged it closely as you swung round the turns; the other fellow had the outside edge, and in the cheerful phrase of the time, it was “his funeral.”