The last name on his nametag looks like "Carlo" or maybe "Castro".
**EDIT** After some searching, I don't have a name for that guy, but the race where his picture was taken was not the Daytona 500, but rather the Firecracker 400 (also run at the Daytona Int'l Speedway). The difference is the Firecracker 400 was on July 4, 1984, so it was after the Indy 500 race.
**EDIT #2** Found it! From left to right in the picture: Ned Jarrett (former driver and announcer for the race); Ronald Reagan; Richard Petty & Mike Curb (former lieutenant governor of California and owner of Petty's race winning car)
Here is where I found this info:
https://wheels.blogs.nytime...-gipper-as-gearhead/[This message has been edited by mrfiero (edited 02-16-2020).]