The list gives one an idea as to just how large the lease fleets (UTLX, GATX, SHPX, NATX, and for Canada, CGTX and TCLX). The ORER has always been a little shaky in tank car information, and frequently doesn’t cover railroad-owned cars — mostly because railroad-owned cars were employed in the service of the railroad, and not generally available for other uses.  Even the Tank Car Capacities tariff (TCC) overlooks a number of railroad-owned cars — for example, both Canadian National and Canadian Pacific owned a number of tank cars for company use, and none of them were listed in either the ORER or TCC.