We need more entertainment while getting our Christmas presents through the USPS. Children want to see Rudolph the Red-Nosed or Santa Claus come to their doorstep and give gifts, not just boring old trucks giving out boxes to parents. Also,the White House has specialties for the holidays; why not the USPS?
Thus, I believe that during the holidays (around December 20th to New Year's Eve) the USPS trucks gets a makeover.
From,
A proud American