 Holden developed a relationship with America's General Motors (as Adelaide contemporary T. J. Richards did with Chrysler) to fit bodies to imported chassis.In 1919 Edward (as managing director) and his father founded a company Holden's Motor Body Builders with a factory at 400 King William Street later occupied by A. G. Healing Ltd.In 1923, following the signing of an exclusive agreement in Detroit with General Motors by Edward Holden, a new factory was set up at 879–895 Port Road, Cheltenham, employing the latest in production line technology.