When Karen is listing reasons why she likes Joe (played by Jack Gilford) she says he makes her laugh by doing things like impersonating "soup." In real life, Jack Gilford's "pea soup impersonation" is his most famous shtick.
In the first scene, Elaine wears a pale Navy-green turtleneck sweater-sack over bright red leggings and high heels. The sweater-sack color matches the walls of the Sunshine Cab Co. garage interior nicely.