In 1941, Hankinson sold the track to stuntman Earl "Lucky" Teter after a falling out with the AAA. However, Teter's tenure only lasted until July 5, 1942, when he was killed while attempting his rocket car leap stunt at the Indiana State Fairgrounds. That same month, the U.S. government banned all forms of auto racing due to America's involvement in World War II. As a result, the speedway sat idle and did not host a race of any kind until 1946. Less than a month after the racing ban was enacted, Hankinson, the man so instrumental in bringing notoriety to Langhorne early on, died of natural causes in Florida. With a huge void created in the track's management, ownership of Langhorne Speedway was passed on to John Babcock and his family. Then in 1951, Irv Fried and Al Gerber became promoters.