I'm new here and still learning my way around and making a few mistakes, which I have hopefully learned from.   I'm curious about one book that has been en route since early last week (I got it by using my first 2 sign-up credits).  I have been able to "watch" as the little mail truck got closer to my destination.  However, it has been over the end-point since Saturday.  I have already received my mail today.  Does that mean  it has been waiting at the post office all that time?  Or is that feature an estimation rather than an accurate account of my book's whereabouts. 

It's an estimation.  Sometimes they scan them at teh post office and you don't see the book for days after it says it was delivered.

 I'm relieved to hear this actually.  Thanks for helping me figure this out.

Watch the little truck drive around in the ocean while the truck driver takes his "3 martini lunch" -- the guy thinks he can drive to Puerto Rico! :-)

The mail truck for one of my books is right now in the Atlantic Ocean on its way to Colorado!

Not very accurate at all but the little horn on the USPS truck is rather amusing.  Sort of.

The little truck is usually considered more entertainment than useful information.  Use the "Details" button for a list of the PO scans.  Sometime USPS website will have slightly different (and even more accurate) information.