 Nyora kupfuurira kweiyi ndima - Nokuda kweNew York Worlds Fair ya1939-1940, Pennsylvania Railroad yakanga yaratidza marokomoti akawanda enhoroondo nemotokari dzavakanga vaunganidza mumakore akawanda. Pashure pokunge mutambo wacho wapera, PRR, yakasarudza kuchengetedza midziyo yakanga iri kuratidzwa, pamwe chete nedzimwe motokari dzakasiyana-siyana nemidziyo inofamba. Midziyo yacho yaichengetwa muimba yaichengeterwa zvinhu muNorthumberland, Pennsylvania, uye yaichengetwa nevashandi. 