Afterward he and Maury were going to the theatre--Caramel would
probably trot home and work on his book, which ought to be finished
pretty soon.
"I should think the appearance of the black note-book would prove that
he's going to life."
Well, what I was going to say was that my book is going to
start a new prose movement, a sort of renaissance."
With the concordancer we found three uses of the present and past continuous is going, was going in Fitzgerald's, The Beautiful and the Damned.