WO Bentley in partnership with brother HM Bentley sold French DFP cars, and in 1919 'WO' exhibited his first design, but the 3-litre only went on sale in 1921. Between 1924 and 1930 Bentley won the Le Mans 24hour race 5 times. Bugatti cars were heavy, and Bugatti termed the Bentley Boys' racing machines 'the worlds fastest lorries'. Racing cost Bentley a lot of money which had been provided by Woolf Barnato, and when the Barnato funds dried up in 1930 Bentley had to find a partner. Rolls-Royce secretly bought Bentley in 1931, and the unhappy 'WO' moved to Lagonda in 1935. By 1933 the 'Derby Bentleys' were mechanically the same as Rolls-Royce models. Vickers took control in 1971 when Rolls-Royce ran up debts with its aero engines. In 1998 Bentley was sold to Volkswagen, and was separated from the BMW owned Rolls-Royce.