. Delivery of the original Superliner 1 cars began in 1979 with the first cars operating on short runs originating in Seattle and Chicago. As more cars arrived, entire Superliner trainsets replaced trains on existing Western routes. The height of a Superliner generally precludes its operating in the Northeast because of tunnel clearance concerns. When originally delivered in the 1970s, Superliner I lounges were referred to as "Lounge Cafe" cars. These were fitted with enormous windows that wrapped upward into the ceiling, providing views of scenery along the train's route, like the dome cars of old.