On the foam topic:
http://forums.freshalloy.com/showthread.php?t=162693
http://www.americanchemistry.com/s_p...=1080&DID=6590

Ignoring empirical facts is fun.

You should also ask yourself why all cars don't have a flower holder since Volkswagon puts them in the bug. I mean geez, they don't cost that much. Arguing on pure speculation why an automotive manufacturer didn't do something is pointless.