So, about this:

In Leopard, Apple has shipped beautiful icons that represent all the recent models of Mac capable of running Mac OS X 10.5. From Mac Pros and Minis to the new MacBook Air, there’s an icon for each sitting on your system.

Pardon me if it's a dumb question, but where on the system might I find these beautiful icons? I might just want to change my hard drive icon to the appropriate one, if I could only locate it :)