When I was a lad, few riders went on long tours. Bikes then were far from the reliability of the present day, and the Interstate Highway System had not yet been built. But today’s riders expect their big tourers to roll right up one side of the Rocky Mountains and down the other, two-up, with luggage, sound system, and even a trailer behind, at speeds of 75 mph and up. Power to spare for passing. That has driven constant growth in engine displacements. The old 61s became 74s, then 74s became 80s, and today here we are with touring motorcycles having bigger engines than many economy cars.