A fuel cell electric vehicle (FCEV) by Nissan is shown at China (Guangzhou) International Automobile Exhibition in Guangzhou, China November 18, 2016. (Photo by Bobby Yip/Reuters)

A student protester throws a stone against a riot police vehicle during a demonstration to demand changes in the education system in Santiago, Chile, April 21, 2016. (Photo by Ivan Alvarado/Reuters)

Performers are reflected in a displayed vehicle before going onto the stage during the Auto China 2016 auto show in Beijing, China, April 29, 2016. (Photo by Damir Sagolj/Reuters)

An assault at 125th Street and Dr. Martin Luther King Jr. Boulevard in Harlem, after a basketball game on August 9, 2020. Police vehicles responded but no officers intervened. (Photo by G.N.Miller/The New York Post)

A view shows a Lun-class Soviet-made ekranoplan, which is a naval craft and a ground-effect vehicle, on the Caspian Sea coastline in Derbent in the Republic of Dagestan, Russia on November 3, 2020. (Photo by Kazbek Basayev/Reuters)

A woman poses for a photo in front of the Wagner Group military vehicle on June 24, 2023 in Rostov-on-Don, Russia. (Photo by Feodor Larin/Anadolu Agency via Getty Images)

A drone view shows vehicles in the area affected by the floods, in Encantado, Rio Grande do Sul state, Brazil, on May 3, 2024. (Photo by Diego Vara/Reuters)

“A monowheel is a one-wheeled single-track vehicle similar to a unicycle. However, instead of sitting above the wheel, the rider sits either within it or next to it. The wheel is a ring, usually driven by smaller wheels pressing against its inner rim. Most are single-passenger vehicles, though multi-passenger models have been built.

Pedal-powered monowheels were built in the late 19th century; most built in the 20th century have been motorized. Some modern builders refer to these vehicles as monocycles, though that term is also sometimes used to describe motorized unicycles. Today, monowheels are generally built and used for fun and entertainment purposes, though from the 1860s through to the 1930s, they were proposed for use as serious transportation”. – Wikipedia

Photo: Cycle inventor Kerry McLean poses for the photographer 2000 in Walled Lake, Michigan. The “Monocycle” is equipped with a 40-horsepower engine, 4ft tire and is expected to reach speeds upwards of 100 mph. (Photo by Bill Pugliano/Liaison)