Here's another pic I recently culled. These are 1967 models, I believe. (For sure, the Camaro did not exist prior to 67.)
Notice all the new platforms added in only a few years:
- f-body Camaro, 1967
- a-body Chevelle, 1964
- x-body Nova, 1962
The z-body Corvair, 1960, is absent from the group pic. Perhaps it had already fallen into disfavor by 1967. For sure, it would be gone in a couple more years.
Even without the Corvair, this pic illustrates well how much more diverse the Chevy portfolio had become since the 1950's.
Not shown, other new Chevys had also been introduced during the the 1960's including the full sized van and the Corvair Greenbrier van (altho the latter ended production in 1965).
Over the course of the 1960's, many new platforms were added to the mix.