What is "ner-a-car"

The Ner-A-Car was a type of feet forwards motorcycle designed by Carl Neracher in 1918. About 10,000 of these motorcycles were manufactured in the United States by the Ner-A-Car Corporation under the Neracar name, while around 6,500 are believed to have been produced in England under licence in England by the Sheffield-Simplex company between 1921 and 1926 under the Ner-A-Car name.