Rosario Di Blasi (1919-2008) began developing a folding scooter in 1952. In postwar Rome, bicycle theft was common, as any kind of personal transport was in short supply. The story goes that while carrying his bicycle up the 8 flights of stairs to his apartment, Di Blasi thought the idea of a folding bike would be easier to transport.

DKW started as a motorcycle manufacturer in 1919.  Their first motorcycles were called Das Kleiner Wunder (the little wonder); hence the name DKW.

The DKW-Vemag is considered the first genuinely Brazilian-made passenger vehicle. It is basically a German DKW Sonderklasse. There were some differences; for example, no heater was provided (for obvious reasons). The first DKW-Vemag model was launched in 1958.

The Dragonfly Airdrive was an all-season, above-water outboard engine manufactured by Robertson-Hedges Inc. in Kansas City, Missouri. They were produced from 1954 through the mid-late 1960s.

Almost as a hobby, in 1977 Guy Duport built a prototype, first-of-its-kind diesel-powered microcar. It was a small car with a plastic body and 2 doors, equipped with a 510cc (about 31 cu. in.) Lombardini diesel engine. According to Duport, that 10HP engine assured 3,500 hours of operation, allowing it to travel potentially more than 62,000 miles.

Buckminster Fuller had a long and productive career. He was a visionary that worked in many fields, from the environment to architecture. The Dymaxion, which is an acronym for DYnamic MAXimum TensION, was his most famous automotive project.

The Elcar was a small electric car produced by the famous Italian design and coachbuilding company, Zagato. Known for designs such as the Ferrari 250 GT, Alfa Romeo TZ3 Stradale, and Aston Martin DB7 Zagato, the Zele, as it was known in Europe, was quite a departure.