prototype
A prototype is an early sample, model, or release of a product built to test a concept or process. It is a term used in a variety of contexts, including semantics, design, electronics, and Software prototyping, software programming. A prototyp ...
passenger car built by
Mitsubishi Heavy Industries
is a Japanese multinational engineering, electrical equipment and electronics corporation headquartered in Tokyo, Japan. MHI is one of the core companies of the Mitsubishi Group and its automobile division is the predecessor of Mitsubishi Mo ...
, the company which would eventually sire
Mitsubishi Motors
is a Japanese multinational automobile manufacturer headquartered in Minato, Tokyo, Japan."History of Mitsubishi, 1870-1939 Mitsubishi Motors website Commissioned for military use by the
Japan
Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...
ese government in 1934,"Japan's Pioneer of 4WDs" Mitsubishi Motors South Africa website it was the first
Japan
Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...
ese-built sedan to have full-time
four-wheel drive
Four-wheel drive, also called 4×4 ("four by four") or 4WD, refers to a two-axled vehicle drivetrain capable of providing torque to all of its wheels simultaneously. It may be full-time or on-demand, and is typically linked via a transfer case ...
, a technology the company would return to fifty years later in pursuit of
motorsport
Motorsport, motorsports or motor sport is a global term used to encompass the group of competitive sporting events which primarily involve the use of motorized vehicles. The terminology can also be used to describe forms of competition of two ...
success."Mitsubishi Motors lineup at Paris Motor Show" Mitsubishi Motors press release, September 28, 2006 Four working prototypes were built, and a version was in development using Mitsubishi's 6.7 litre, ''445AD'' powerplant, Japan's first direct injection
diesel engine
The diesel engine, named after Rudolf Diesel, is an internal combustion engine in which ignition of the fuel is caused by the elevated temperature of the air in the cylinder due to mechanical compression; thus, the diesel engine is a so-call ...
. However, the entire PX33 project was cancelled in 1937 after the government decided to prioritize Mitsubishi's manufacturing capabilities on commercial development of
truck
A truck or lorry is a motor vehicle designed to transport cargo, carry specialized payloads, or perform other utilitarian work. Trucks vary greatly in size, power, and configuration, but the vast majority feature body-on-frame construction ...
s and
bus
A bus (contracted from omnibus, with variants multibus, motorbus, autobus, etc.) is a road vehicle that carries significantly more passengers than an average car or van. It is most commonly used in public transport, but is also in use for cha ...
es. In 1937, another Japanese company Tokyu Kurogane Kogyo began production of a smaller four-wheel drive car called the
Kurogane Type 95
The Type 95 was a Japanese scout car built by , and was used during the war with China and World War II in the East. Between 1936 and 1944 approximately 4,700 were built. It was the only completely Japanese designed reconnaissance car ever u ...
.
The PX33 received renewed attention as a
marketing
Marketing is the process of exploring, creating, and delivering value to meet the needs of a target market in terms of goods and services; potentially including selection of a target audience; selection of certain attributes or themes to emph ...
tool for Mitsubishi during the release of the fourth generation
. The PX33's historical and technological link to the company's newest
sport utility vehicle
A sport utility vehicle (SUV) is a car classification that combines elements of road-going passenger cars with features from off-road vehicles, such as raised ground clearance and four-wheel drive.
There is no commonly agreed-upon definitio ...
saw both cars displayed in parallel at the
Paris Motor Show
The Paris Motor Show (french: Mondial de l'Automobile) is a biennial auto show in Paris. Held during October, it is one of the most important auto shows, often with many new production automobile and concept car debuts. The show presently take ...