The Yellow Coach Manufacturing Co. was founded in 1923 as a subsidiary of the Yellow Cab Company by John D. Hertz and was an early player in bus manufacturing in the United States. G.J. Rackham, whose career had commenced with the London General Omnibus Company (LGOC) after the First World War spent four years in the USA from 1922 to 1926 and recognised the advantage of low swept chassis frame for bus development whilst employed by Yellow Coach in Chicago. It is likely that he was 'headhunted' by Hertz to help start up the bus building business. In 1926 he returned to England to join Leyland Motors as Chief Engineer and was responsible for the groundbreaking Titan and Tiger models.