Various forms of the bicycle were around for centuries. But in the early 1800’s, in response to a global shortage of horses, a German inventor, Karl von Drais, came up with his own four-wheeled (primitive) bicycle.
He called it a Hobby Horse, and it made a big splash in France and England. Then, after some time, their popularity waned, and the world would have to wait another 50 or so years before a vehicle called the Bone Shaker emerged on the scene.
Apparently, there was no turning back, and inventors competed to create better bicycles that, for one thing, people could remain on even when they rode over potholes.