Overview
A sidecar is a one-wheeled device attached to the side of a motorcycle, scooter, or bicycle, making the whole a three-wheeled vehicle. A motorcycle with a sidecar is sometimes called a combination, an outfit, a rig or a hack.
History
Jean Bertoux, a French army officer, secured a prize offered by a French newspaper in 1893 for the best method of carrying a passenger on a bicycle. The sidecar wheel was mounted on the same lateral plane as the bicycle's rear and was supported by a triangulation of tubes from the bicycle. A sprung seat with back rest was mounted above the cross-member and a footboard hung below.
A sidecar appeared in a cartoon by George Moore in the January 7, 1903, issue of the British newspaper Motor Cycling. Three weeks later, a provisional patent was granted to Mr. W. J. Graham of Graham Brothers, Enfield, Middlesex. He partnered with Jonathan A. Kahn to begin production.
One of Britain's oldest sidecar manufacturers, Watsonian, was founded in 1912. It is still trading as Watsonian Squire. Automobile producer Jaguar Cars was founded in 1922 as a sidecar manufacturer, the Swallow Sidecar Company.
From Wikipedia (CC BY-SA 4.0).