Motocycle was a word used in the United States in the latter part of the 19th century for a horseless carriage, the type of vehicle now known as a car or automobile. The word caught on initially as it was short and easier to understand than other possibilities, such as "automobile carriage", "motor carriage", "motor vehicle", or "auto carriage".[4] It is now archaic and rarely used. The term "motor vehicle" is currently used in legal, transportation planning and academic terminology.
^Horseless Age: the automobile trade magazine, Volume 1, p. 34