In the early 1900s, people would shout "get a horse" at people in cars: Get a horse! According to Mr Norris M Davidson, a retired radio commentator on music i

In the early 1900s, people would shout "get a horse" at people in cars: Get a horse! According to Mr Norris M Davidson, a retired radio commentator on music including opera, and very widely read who was born c. 1908 this was a common American phrase in my childhood, when the motor car or automobile, as we called it, was a novelty. The roads not being paved were full of mud holes; tired were apt to burst, engines conked out and publication like Life, Puck and Judge were filled with illustrations about stranded motorists. Many showed the car being towed ignominiously by a horse. Urchins would shout 'Get a horse!' at every daring motorist. -Dictionary of Catch Phrases by Eric Partridge [0] [0] https://books.google.co.uk/books?id=3eoQAAAAQBAJ&pg=PA98&lpg=PA98&dq=%22get+a+horse%22+history+shouted+on+streets&source=bl&ots=zrlcp1aK6A&sig=ACfU3U36hdqvwPObI3DHdVfYXkr1DLlTjQ&hl=en&sa=X&ved=2ahUKEwjO3MrYx9ThAhX5RBUIHZuGDigQ6AEwDHoECAcQAQ#v=onepage&q=%22get%20a%20horse%22%20history%20shouted%20on%20streets&f=false https://books.google.co.uk/books?id=3eoQAAAAQBAJ&pg=PA98&lpg...)