It's unclear exactly when the tradition started, but we know who to thank. Louie Meyer was a three-time winner of the race who hailed from Queens, New York. His mother recommended he drink buttermilk on hot days.

IndyCar medical director Geoffrey Billows said Thursday a "very limited supply" of vaccines will be available at the medical building.

During the month of May, emergency medical residents from across the country are in Indianapolis for a residency program at the Indianapolis Motor Speedway.

Retired NASCAR driver Dale Earnhardt Jr. will drive the Corvette Grand Sport Official at Indianapolis Motor Speedway to lead the 33 drivers to the green flag May 26.

This marks the 16th time a Corvette has been chosen to pace the race since its first in 1978.

The device been dubbed "Advanced Frontal Protection" will be introduced during an April 24 test session at Indianapolis Motor Speedway.

Stewart, a three-time NASCAR champion and Indiana native, grew up chasing a win at Indianapolis Motor Speedway. He won twice there in NASCAR's Brickyard 400, but was never able to win the Indy 500.

Will Power became the first Australian to win the Indianapolis 500 and the first driver to win both the IndyCar Grand Prix on the Indianapolis Motor Speedway road course and the Indy 500.

Before becoming a professional race car driver, Guthrie had more than a decade of experience working on sports car road-racing circuits.

Carpenter not only had the fastest single lap time, but managed to keep his speeds fast enough to win the front starting spot for race day.