American Simplex, later known as Amplex, was an automobile manufacturer based in Mishawaka, Indiana, active from 1906 to 1913. The company initially operated as the Simplex Motor Car Company, producing vehicles that featured 2-stroke engines. The first model introduced in 1906 was powered by a 40-horsepower twin engine, which was later upgraded to a 6.8-litre 30/50 horsepower four-cylinder engine by 1908. The cars were considered high-end, with…