discussed Cited "see" Nicholson v. Interstate Commerce Commission Accord New Orleans Terminal Co. v. Spencer, 366 F.2d 160, 165-66 (5th Cir.1966), cert. denied, 386 U.S. 942 , 87 S.Ct. 974 , 17 L.Ed.2d 873 (1967) (emphasis added) (“If there are traffic movements which are part of the actual transportation haul from shipper to consignee, then the trackage over which the movement takes place is a ‘line of railroad, or extension thereof....’ If, however, the trackage is used in the loading, reloading, storage and switching of cars incidental to the receipt of shipments by the carrier or their delivery to the consignee, then such trackage is ‘spur, indus…