1994 Pininfarina Ethos 3

With the 1994 Ethos III concept, Pininfarina tried to reinvent the city car. The body is hardly longer than the Fiat Cinquecento, it was possible to fit six seats - two rows of three with a narrower middle seat. Critical to the car's compactness was the Orbital's tiny 1.2-liter three-cylinder two-stroke engine. The lightweight aluminum body helped keep the weight of just 780 kg, which significantly reduced fuel consumption.

Source: sovmestimo.org