also worked as a publicist, writing the USAC newsletter and other related publications. Davidson left USAC in 1997, and worked briefly for IMS Productions, the in-house television division at the Speedway. In January 1998 he officially became the full-time historian of the Indianapolis Motor Speedway, and maintains an office at the Museum. He is also now the longest-serving commentator on the IMS Radio Network staff, having served in at least some capacity on every radio broadcast of the Indianapolis 500 since 1965 (not including his guest appearance in 1964). Parallel to his work on the IMS Radio Network, Davidson also worked on the local radio coverage of practice and time trials on WIBC. The Talk of Gasoline Alley Origins In 1966, Sid Collins arranged for Davidson to host 15-minute semi-daily radio program on 1070 WIBC during the month of May. The program was called "Dial Davidson," and allowed phone-in callers to ask Davidson questions about the Indianapolis 500. In 1967, Davidson was unable to continue the program because he was going through basic training at Fort Rucker in the National Guard. He missed a considerable part of the month of May at Indy in 1967, but was able to attend the race itself and serve on the radio network broadcast. After management changes at 1070 WIBC in 1970, the station vastly increased their coverage of the Indianapolis 500 for 1971. Davidson was invited back to host a one-hour nightly quiz show about the Indy 500. The show was unnamed for the first two to three years, but for a brief time it was called "Stump the chump". Lou Palmer called the program "Do it to Donald" and Chuck Riley called it "Stymie the Limey." Callers won prizes if Donald did not know the answer. Show format After a few seasons, the show evolved from a "rapid fire" call-in quiz show to a more long form caller-based question & answer talk show, with Davidson taking the role of raconteur. Davidson fields the callers' questions, preferably of a nostalgic nature, about the history of the Indianapolis 500. Furthermore, he prohibits himself from using any sort of reference material during the show, relying only on his own memory. Not only does he answer questions, but he adds various anecdotes, vignettes, statistics, driver biographies, and may recount other related stories, typically of personal experiences regarding the subject matter. Topics for discussion are broad, but