The Autotrix was a British

United Kingdom

The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...

 three-wheeled cyclecar

Cyclecar

Cyclecars were small, generally inexpensive cars manufactured mainly between 1910 and the late 1920s.-General description:Cyclecars were propelled by single cylinder, V-twin or more rarely four cylinder engines, often air cooled. Sometimes these had been originally used in motorcycles and other...

 manufactured by Edmunds and Wadden in Weybridge

Weybridge

Weybridge is a town in the Elmbridge district of Surrey in South East England. It is bounded to the north by the River Thames at the mouth of the River Wey, from which it gets its name...

, Surrey between 1911 and 1914.

Two versions of the car were advertised, both with air-cooled JAP

JA Prestwich Industries Ltd

JA Prestwich Industries, was an English engineering company named after founder John Alfred Prestwich, which produced cinematographic equipment, internal combustion engines , and other examples of precision engineering.-History:J. A...

 engines. The smaller version had a 4 hp engine and belt drive and the larger a 9 hp unit and chain drive. A water-cooled, 6 hp Fafnir

Fafnir (automobile)

Fafnir was a German engine and vehicle manufacturer based in Aachen. They made a range of cars between 1908 and 1926.The company was founded in 1894 producing needles. With the growth of the bicycle industry, they started to make wheel spokes...

engine was offered as an alternative in the larger car.