Use of foam as insulator?

[foxxinabox at wideopenwest.com (Foxx (in a box))]

>> If any one has a link to the type of padding the MKI uses as underlay I'd love to see it.
> 
> ::shudders::
> 
> Are you talking about the thick black crap that's under the seats and
> in the side panels and whatnot?  If you've taken that stuff out I
> cannot fathom why you would want to put the same junk back in.
> Dynamat.  Seriously.  It's the same idea - just a decade more modern.
> If you're not trying to make a featherlight race car, you should use
> this stuff everywhere you can.
> 
> I'm still remembering the summer I spent chipping that crap out of my
> black car with an air hammer and needle gun.  Ugh.  Awful.
> 
> -Grant-

   I was able to fairly easily pull the stuff out with a propane torch 
and a putty knife. Hot as hell, and stank like a mofo, but it didn't 
take too much force. In a related side note, when I was eight or nine, 
as a punishment for staying up all night, my friend and I were given 
small putty knives and told the clean out the inside of a 40's coupe 
that was being redone as a street rod. That REALLY sucked.