A professor of English and author of several books on Streetcar, Philip Kolin offers this perspective:
"People have said that Williams absolutely invented the idea of desire for the 20th century....It was a play that dealt with for the very first time on the American stage, female sexuality and male sexuality."
This play replete with passion expresses much of the human condition.Williams used more than just the name of a streetcar for inspiration. In fact it has been suggested by some critics that the rough, ill-tempered, but rawly masculine Stanley was based on Williams' lover at the time he was writing the play, a man named Pancho Rodriguez Gonzalez.
Perhaps, then, you may wish to research how much of the play is based upon reality with the personal relationships and with the life in the New Orleans at the time.