[BRENT in 10-uh-C]

Since I own several Model-Ts and brass-era vehicles that only have a hand throttle, I enjoy using the hand throttle on a Model-A once I am in high gear. I do it simply to break the boredom while I am driving. Ford originally incorporated this feature because of the familiarity of his customers with the throttle lever. I think it would be a fair statement to say that today, most Model-T drivers can safely & efficiently drive a Model-A however most Model-A drivers cannot safely drive a Model-T. It likely boils down to familiarity.