I grew up in Michigan and was thoroughly immersed in the automotive industry and its history. Not cycling; that came later. The hallowed ground of Speedway, IN, — the brickyard, the Indy 500 — was a few hours’ drive to the south. Any history that really mattered was housed a few hours’ drive to the east in Dearborn, MI — The Henry Ford Museum and Greenfield Village.
I knew that both AC Spark Plug (later AC-Delco, a division of General Motors) and Champion Spark Plug were started by Albert Champion.