REO launched the Flying Cloud in 1927, styled by Fabio Segardi, and fitted with a new form of hydraulic brakes by Lockheed. The Flying Cloud was built on a 115-inch wheelbase, and was powered by 3,518cc Continental Six. There were also larger Flying Cloud Master with longer wheelbases and larger engines. For 1931 REO offered a small eight cylinder engine in the Flying Cloud as an option (8-25) as well as a smaller engined 6-21 but both of these sold slowly. Clouds were sold on 130-inch wheelbase as well as a six cylinder on 125-inches. Sales were poor, so the 1932 Flying Cloud shrunk to 117-inch with an 80bhp Six for the 6-S; bodies and chassis for these were sold to Franklin for their Graham-Paige models. In 1933 The REO Flying Cloud Eights were dropped, and a lower-priced S-2 Flying Cloud was sold on a 118-inch wheelbase. In late 1933 a new S-4 Flying Cloud was launched with streamlined styling, but underneath it was old S-2 and S-3 mechanics. 1935 models included a hardly altered S-5 Flying Cloud, but later that year two new fastback sedans and a 90bhp engine formed the new A-6 Flying Cloud. The A-6 was warmed over for 1936, but further decline in sales saw REO put trucks onto its car production lines and trucks kept the company going for around 40 years.