| Clue | Source | Date |
|---|---|---|
| Tempo-setting race vehicles | Eugene Sheffer | 04 Dec 2020 |
| Indy front-runners? | New York Times | 13 Mar 2015 |
| Indy front-runners? | ||
| Tempo setters at the track | ||
| Indy sights since 1911 | ||
| Some Indy 500 vehicles | ||
| Indy leaders | ||
| Track warm-up leaders | ||
| Indy leaders |