The original Midget featured a single seat, a doorless cab, and handlebar steering. In 1957 the DK Midget was introduced. The engine was an air-cooled 2-stroke design of 250 cc which produced 10 hp (7 kW).
In 1959 the MP Midget was introduced - updated with such features as a steering wheel, doors, and seating for two. The engine was an air-cooled 2-stroke design of 305 cc which produced 12 hp (9 kW).
Subsequent revisions to the MP design were made, resulting in the model MP4 (which featured a larger cargo bed than the original model) and finally the MP5 (which introduced automatic oil mixing for the 2 stroke engine) which remained in production until 1972.
By 1972, 336,534 units had been produced, and production was terminated because of the falling popularity of three wheeled models to more modern four wheeled models.
The Midget I has also been sold outside Japan as the "Bajaj", "Tri-Mobile", or "Bemo". It is one of the first cars manufactured by the Japanese automaker Daihatsu, known for its low cost, practical vehicles. Almost exclusively used as an autorickshaw (or 'tuk-tuk') the Midget was also a well known icon of public transportation in South Asia. Not meant for performance, this obscure vehicle does weave through larger traffic well, despite the fact that it only has three wheels. These original tuk-tuks are a little harder to find in modern times. source: wikipedia