I've always been curious if the two lines:
Freddie: "You said New York...New York is dangerous, cause you ain't got what you made."
David: "Even a blind man can see that's not so!"
...were from the original "Under Pressure" sessions or whether they date from a different point. Let's assume for a second that Bowie's line comes from his time working with Queen in 1981. That would mean one of three things:
1) It's an outtake from "Under Pressure"
2) It's an outtake from "Cool Cat"
3) It's an outtake from an unreleased, incomplete song or jam session
Looking at Freddie's line, the possibilities are greater. In the early '80s Freddie was spending a lot of time in New York at gay clubs and discos there. He wrote "New York" during his Mr. Bad Guy sessions and was certainly attached to the city. I'm not sure if he was there as much in 1981 and most of their recording (solo and as Queen) was being done at Mountain Studios, in Switzerland, which they'd bought. There's a very good chance that Freddie's line dates from later, perhaps during the Mr. Bad Guy period.
Also, a more skill audiophile might be able to tell us whether Freddie saying "New York" was was repeated in order to create a different meter for the intro. I wonder if the line, maybe from a different song, was "You said New York was dangerous, cause you ain't got what you made." Just a thought.
(I might be entirely off the mark on these, but it does make me wonder)