This paper car is a Kleinschnittger F125, the paper model was created by oniya. The scale of the paper model is in 1:35. Kleinschnittger was a German company that between 1950 and 1957 produced microcars. They were powered by a 125 cc single cylinder two-stroke engine that produced 4 kW (5.4 hp) and a top speed of 70 km/h (43 mph). It was very fuel efficient and consumed less than 3 litres per 100 km (~.79 US gal per 60 mi). The body was in aluminium.
The F250 was fitted with a 250 cc engine from ILO giving 11 kW (14.8 hp). It is alleged that it was also made in Belgium under the name Kleinstwagen and in Holland as the Alco.
You can download this car paper model here: Kleinschnittger F125 Paper Car Free Vehicle Paper Model Download