On yer bike!

The United Nations General Assembly declared 3rd June as international World Bicycle Day to recognise the uniqueness, longevity and versatility of the bicycle, which are affordable, environmentally friendly fit sustainable means of transportation.
The first verifiable claim for a practically used bicycle belongs to German Baron Karl von Drais, a civil servant to the Grand Duke of Baden in Germany. He invented his “Laufmaschine” (German for "running machine") in 1817. Karl von Drais patented this design in 1818, which was the first commercially successful two-wheeled, steerable, human-propelled machine, commonly called a velocipede, and nicknamed hobby-horse or dandy horse.
However, in 1839 Scottish blacksmith Kirkpatrick MacMillan, invented the first pedal-propelled bicycle.  MacMillan never patented his bicycle invention and it was copied by others.