Walthers HO Scale 932-6447 63' Budd RPO Car BurlingtonModel is brand new in original packaging Move mail in style by streamliner! Increasingly aware of their image, many railroads made sure every car on their newest post war trains was streamlined. And since mail contracts often made passenger service profitable, these all new Railway Post Office (RPO) cars were a sign of the company's commitment to the Postal Service too. Fully equipped to collect, sort and deliver mail enroute, streamlined RPOs like