Several decades ago the way the mail was delivered was as follows...
A van drove through town dropping off a mailman at the corner of each block. By the time the mailman was going up and down the block the van would be back to pick him up. Each van carried 7-10 carriers. Why the heck can we not go back to doing this again? It would cut down vehicle costs, automotive maintenance, etc... The only time you'd need more vans would be during the christmas season.
Also, I remember quite well that when the Post Office asked for permission to raise rates one year, congress approved. Two weeks later it was announced the top 25 people at the Post Office split several million in bonuses. Hmmm...