SFM Smyk B30. In 1957 Polish automotive design firm Biurze Konstrukcyjnym Przemysłu Motoryzacyjnego was among the competitors to build a People's Car . Over the course of two years, 17 Smyk B30 prototypes were built with the help of the motorcycle factory Fabryka Mechanizmów Samochodowych (SFM). The design and engineering of the prototypes were inspired by the BMW Isetta 600 and Zündapp Janus production cars and Dornier Delta prototype (produced under license as the Janus).