This one is captioned "Buster & new car at Eldons Oct '66." Buster is Oliver Henry Ross (1906-1988) and Eldon is Dr. Eldon Ardith Ross (1928-2007). Eldon was the son of Oliver's brother, John Franklin Ross Jr. I'm not a car expert, but you can read Chevrolet Bel Air on the high res original scan. The location is probably in or near Calhoun County, Iowa.
This photo is from Clara Ross-Fowlie's photo album. Buster was Clara's youngest brother and he was my great grand uncle.