Unlike many Neil Simon efforts, which were written as plays and then adapted into a film, Simon wrote this directly for the screen when he realized that a play would have difficulty portraying the many different locations involved.
The stubs of the newly started towers of the World Trade Center, risen to 10 or so stories, are visible in the scenic view of Manhattan from the airplane. They are unmistakable because of their rusty red patina, which was still in place when the towers fell 32 years later.
Writer Neil Simon originally intended this to be a segment of the play of Plaza Suite (1971). It was entitled "Visitor from Toledo" and was intended to open the play on Broadway but was cut during the rehearsal period. Simon once described the one-act to the 'Newark Eveing News' as being "...about a man who came to New York from out of town and lost his luggage. He got there in the middle of a transit strike. It was snowing. So after he had checked into the Plaza [Hotel] he had this monologue. We put 'Plaza Suite' into rehearsal, and after about the fifth day [the director] 'Mike Nichols' said 'We just have too much show here. If we include that monologue, the curtain will be coming down at midnight'".