FedEx's main hub is in Memphis, so overnight from there to anywhere is no issue. If you can overnight something from NYC to LA, it can certainly make it from Memphis to Minnesota overnight. It's kind of interesting to be anywhere near the Memphis airport late at night...it's FedEx planes lined up on approach for a while...they all land get unloaded, stuff gets sorted and reloaded, and the planes all take back off again for the destination.
Then again, this thread is more than a day old, and your stuff is still sitting there. That is odd...it's not like it's the first iPad to come through!