Eco Motors Co. Ltd was an Australian automobile manufacturer based in Melbourne, Victoria, that operated from 1924 to 1926. The company was founded by George Hamilton-Grapes, a New Zealand native who had previously been involved in the motor trade. His interest in fuel efficiency led him to develop a patented device known as the 'Gasifier' by 1919, which aimed to enhance the performance of vehicles. In 1921, Hamilton-Grapes traveled to the…