Pre-race and pace laps.  
This was ABC and Indy at it's very best.  During the engine start  camera shots focus on driver names, faces, the starting proceedure, low angle shots as the cars roll.  More like Steve McQueen's Le Mans Hollywood production than a sporting event.  

Fantastic front grid; Rick Mears, AJ Foyt, and Mario Andretti

The traditions are here, I feel they are part of...