Jeep made alot of the older ones, and some of them are still around but in this area the mail trucks we have look like miniature white UPS trucks, lol. They look like this:
Also, I had heard a company named Gunther(?) made the UPS trucks, though Im not really sure of the name. I had heard that the reason you never see badges on the UPS trucks is because the truck design is strictly created by UPS itself within its own company. Which could atone to the slightly different (or same) body styles for different countries. But then again, thats all I HEARD, Mercedes could actually be the manufacturer of them :P