I didn't catch the date but his reference to the 200 Motels album as upcoming puts it in 1970 or 1971.
The interviewer's name is Robin Baxter and she's in over her head. There are a few different ways Zappa tended to deal with interviewers who didn't seem to know what they were talking about; sometimes he'd be playful, sometimes he'd be testy, but he'd always make fun of them.
Happy Martin Luther King Day. Here's a video of the I Have a Dream speech, posted by Fight for the Future.
The I Have a Dream speech is copyrighted. If SOPA had passed last year, this site could have been subject to takedown simply for embedding the above video.
I do not begrudge King's right to own the words he spoke. Nor do I begrudge his family's right to inherit them following his tragic death. But I question the right, not to mention the wisdom, of any entity -- individual, governmental, or corporate -- to restrict the dissemination of these words, this speech, this seminal moment in American history.
The I Have a Dream speech is copyright 1963, Estate of Martin Luther King, Jr. Pass it on.