The Walter HWK 109-509 powered the first piloted aircraft of any type to exceed how many MPH in level flight?
Walter HWK 509 The Walter HWK 109-509 was a German liquid-fuel bipropellant rocket engine that powered the Messerschmitt Me 163 Komet and Bachem Ba 349 aircraft. It was produced by Hellmuth Walter Kommanditgesellschaft (HWK) commencing in 1943.
Barney Oldfield Berna Eli "Barney" Oldfield (January 29, 1878 – October 4, 1946) was an American pioneer automobile racer "whose name was synonymous with speed in the first two decades of the 20th century". He began racing in 1902 and continued until his retirement in 1918. He was the first man to drive a car at 60 miles per hour (96 km/h).