Yea, with the AC set as you described the whole car "just goes completely dead" in autostop. I guess it does this so the condenser stays cold reducing compressor load.

The next time you have first time passengers who are curiously skeptical about hybrid cars, set the AC up that way but don't tell them about it.
Be sure the temp control is set for cold so the fan blows at high speed so the effect is maximized.

Try to hide your grin as you see the look on their face at the first stop light. Or worse, briefly look shocked yourself.
Priceless.