What plane did plane did Howard Hughes fly?

Howard Hughes famously flew the Hughes H-1 Racer, an experimental aircraft he designed and built in the late 1930s. This plane set several speed records, including a world record of 352 miles per hour in 1935. Additionally, Hughes was the pilot of the Spruce Goose, officially known as the H-4 Hercules, which was a large cargo-type flying boat.