NSU Motorenwerke possible that in 1955, NSU became the biggest motorcycle producer in the world. NSU also holds four world records for speed: 1951, 1953, 1954, and 1955. In August 1956, Wilhelm Herz at the Bonneville Salt Flats, Utah, became the first man to ride a motorcycle faster than . In 1957, NSU re-entered the car market with the new Prinz (Prince), a small car with a doubled NSU Max engine, an air-cooled two-cylinder engine of and . Motorbike production continued until 1968. NSU's last production motorcycle was the Quick 50. In 1964, NSU offered the world's first Wankel engined car: the
Land speed racing Land speed racing Land speed racing is a form of motorsport. Land speed racing is best known for the efforts to break the absolute land speed record, but it is not limited to specialist vehicles. A record is defined as the speed over a course of fixed length, averaged over two runs (commonly called "passes"). Under current FIA rules, two runs are required in opposite directions within one hour, and a new record mark must exceed the previous one by at least one percent to be validated. Records are set in either the flying kilometre or flying mile. The sport's