 Diatto cars were known for their innovative engineering and as early as the 1920s they were equipped with four-wheel brakes and four-speed gearboxes.Diatto ceased production in 1929.In 1835 Guglielmo Diatto, a 30-year-old wheelwright from Carmagnola, founded a workshop on the banks of the river Po in Turin for the manufacture and repair of carriage wheels.