Simplex is a brand of car built by the Simplex Automobile Company, a short-lived American car manufacturer which was active from 1910 to 1913. It was founded by the famed New York financier, financier and Wall Street executive John H. Patterson, who also founded the National Cash Register Company. Simplex cars were known for their luxury and performance, and were priced around the same as the much more famous Packard. They were also known for their impressive engines, which included a 5-liter straight-six engine that could produce up to 90 horsepower. Simplex cars also featured advanced features for their time, such as four-wheel brakes and an adjustable steering column.