Honda Super Cub, also known as the Honda Cub, is an underbone motorcycle

Underbone

An underbone is a small motorcycle built on a frame consisting mostly of one large diameter tubular component.The stylistic difference between a motorcycle and an underbone is considerable and they are sometimes known as "step-throughs" or even marketed as scooters in the West.The fuel tank...

 with a 49 cc four-stroke engine in continuous manufacture by Honda

Honda

is a Japanese public multinational corporation primarily known as a manufacturer of automobiles and motorcycles.Honda has been the world's largest motorcycle manufacturer since 1959, as well as the world's largest manufacturer of internal combustion engines measured by volume, producing more than...

 since its 1958 introduction. With more than 60 million manufactured worldwide, the Super Cub is the best-selling motor vehicle in history.
The following refers to current 2007 model line: note: earlier models differ.

The Honda Super Cub debuted in 1958, 10 years after the establishment of Honda Motor Co.