FILE - In this May 23, 1976, file photo, Janet Guthrie talks to racing car owner-builder Rolla Vollstedt, left, and A.J. Foyt, right, in the pits of the Indianapolis Motor Speedway, in Indianapolis. There was no warm reception for Janet Guthrie when she arrived at Indianapolis Motor Speedway 43 years ago. She wanted a spot in the biggest race in the world and her competitors didn't want her anywhere near the Indianapolis 500. (AP Photo/File)

FILE - In this May 28, 1978, file photo, Janet Guthrie is all smiles as her pit crew swarms around her following the 62nd running of the Indianapolis 500 auto race in Indianapolis, Ind. She wanted a spot in the biggest race in the world and her competitors didn't want her anywhere near the Indianapolis 500. It took Guthrie two tries to earn a starting spot, she became the first woman to race in the Indy 500 in 1977, and even longer to change minds about her talent. (AP Photo/File)

In this 1977 photo provided by Indianapolis Motor Speedway, driver Janet Guthrie smiles at Indianapolis Motor Speedway in Indianapolis, Ind. There was no warm reception for Janet Guthrie when she arrived at Indianapolis Motor Speedway 43 years ago. She wanted a spot in the biggest race in the world and her competitors didn't want her anywhere near the Indianapolis 500. (Indianapolis Motor Speedway via AP)

FILE - In this May 21, 1976, file photo, race driver Janet Guthrie and car owner-builder Rolla Vollstedt sit quietly in their garage area of the Indianapolis Motor Speedway after they learned their car had further mechanical difficulties. There was no warm reception for Janet Guthrie when she arrived at Indianapolis Motor Speedway 43 years ago. She wanted a spot in the biggest race in the world and her competitors didn't want her anywhere near the Indianapolis 500. (AP Photo/File)