That school bus is a GMC from the 1930's at the oldest.

I am culling "Andy Griffith Show" images and have found two more that I need special help ID'ing. Any help would be appreciated.

First, an antique car from the 1920s or '30s. The episode "Convicts at Large" reveals that it's owned by none other than Floyd the Barber.



Next, a school bus seen mostly from behind...



A side view shows the words "General Motors" and part of another word, perhaps "Service."



Thanks in advance.