I wonder if any race had the vast number of famous people that the 12 hours of Sebring, 1970, did.

On track:

Steve McQueen, Peter Revson, Mario Andretti, Dan Gurney, Vic Elford, Sam Posey, Bobby Rahal, Carroll Shelby, Jo Siffert, Masten Gregory, Peter Gregg, Don Yenko, Janet Guthrie

Covering the race:

Bill Warner, Bernard Cahier, Chris Economaki, 

Parade lap:

Briggs Cunningham

https://glorydaysofracing.com/wp-content/uploads/Seb70-2020-Signed.pdf

https://en.wikipedia.org/wiki/1970_12_Hours_of_Sebring#:~:text=When%20the%20teams%20descended%20upon,faster%20than%20Chris%20Amon's%20time

I don't know if I've mentioned before, that Peter Revson's uncle founded Revlon cosmetics.