Talkin About The Post Office........

I can't remember why or what I had to send (I'm thinking a cashier's check for a purchase) years ago from NC to somewhere near San Francisco by FedEx. Was told if I dropped it off at the local FedEx by 2pm, it would be delivered there next day by 10am. SAY WHAT?
I tracked it and it was delivered on time. I was amazed by that.
When I worked for Purolator Courier in the 1980s you could send an envelope pretty much anywhere in North America for $10.00, overnight. They had developed an excellent system of distribution hubs and flight patterns, it was quite impressive. That was around the time that FedEx was just getting on their feet, and UPS was not a factor, at least here in Canada.