USPS uses AR for … real?

Ok, this is cute.  I wish I thought of it.  A use of FLAR (Flash AR) for something ... almost useful?  And, most ironic of all, it's by the US Postal Service!  I'm almost giddy, just a simple web page at www.prioritymail.com/simulator.asp.

{% maincolumn assets/uploads/2011/10/usps-ar.jpg "USPS Virtual Box Simulator" %}

Edit (Oct 2016): Here's a video someone made of it, since it's no longer running:

{% youtubes WpS3LeCiCtc %}