I've never figured how the USPS makes money off of pro cycling myself. I've never used the USPS in lieu of Fed Ex or UPS because they sponsor a cycling team. I've always used them when they're cheaper and I'm not in a hurry for something. I've always thought it strange that a US government agency gets involved in sponsoring sporting events. Especially one that's been suspected of PED abuse along with sports they're always wasting time and money with congressional hearings about.
Funny, I ship thousands of packages a year and I choose USPS precisely because they are so fast compared to FedEX and UPS. Plus, that door-to-door service is hard to beat and there is just no comparison on the reliability front.