exactly don't transport it until you have the card in your hand. do not open the package if you have to pick it up at the post office wait until you are home. they can't search mail in your car.
The CFO said not to worry about transporting it (then explained what would happen as I posted above). She said worst case, it gets take for upto 15 days and there is no record of it or further issues/problems. Also, if police have reasonable cause, they can search whatever they want.