bouncing glass noise while driving?!?!
 

Ok, so whenever i'm driving at higher speeds and the road is kinda rough, my car seems to make a 'bouncing glass' noise coming from the engine. Any problems related to this? Or could it just be a loose screw?

last time I checked, there was no glass in my engine :dunno:
A video may help your cause...

Is it a marble-in-a-can type of noise?

Where is the sound coming from ? Front rear or mid ? If front or rear ... jack up car ... and slowly rotate your wheels while off the ground ... if u hear rattling .. its ur TPMS sensor that just decided to take a dump ...

CAT falling apart?

if it happens to be a TPMS sensor, do i need to have it replaced? Because my tire pressure light is on so i'm guessing that would be the problem. I can also live with that light on.