As I assembled myself this morning, specifically as I attached my Apple Watch to my wrist, I reflected upon the mechanical watches and clocks I have owned and the ticking sound they make. This in turn reminded me of the sound made by mechanical automobiles. The sound of mechanism in play is so gratifying that both battery powered watches and electric automobiles are at times outfitted with synthetic reproductions of mechanical movement and sound. For watches the mere appearance of a ticking minute hand (as opposed to the velvety sweep of a battery powered device) is an achievement.