The evolution of farming from horses to machinery was fascinating to see. Horses pulled wagons loaded with shocks of wheat and barley up to the threshers. Massive traction steam engines powered threshing machines that looked a bit like the product of Rube Goldberg's imagination.
When Mr. Van Vark of Pella - who restores traction engines - actually let me drive his 1916 Case 40 hp (for about 30 feet), he showed me how much 'play' there was in the steering wheel. I could spin the wheel two or three revolutions before the wheels began to turn. I learned that's because the steering wheel reels in chains that attach to the axle and turn the wheels - just like a man driving a team of horses would have pulled on the reins to turn the team.