The noise sounds like a glass bowl is inside another glass bowl and they are rubbing. Or like two compact discs rubbing.

There is no certain time the noise happens. I've heard just after hitting a bump and I've heard it on smooth ground.

Initially I thought it was coming from under the passenger side front seat.

I know, hard to help based on my description but I can't think of anything it sounds like.

 

Sounds are difficult to describe over the web. We may be able to help if you can locate where the sound is coming from.

Also, does the sound change with speed?

 

Yeah, I'm having a hard time describing it to my mechanic friends too.

Speed does nothing.

Unfortunatly it's my wife's car so I don't get much time to diagnose.

I initially thought the noise was coming from under the passenger front seat but I didn't see anything that was loose.

 

I've drove it a lot lately. It seems to be happening most when I am turnin left. I also hear it when I accelorate from a stop.