. 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. Superliner dining cars have almost the entire upper level available for seating, while the galley (kitchen) occupies the entire lower level. A dumbwaiter is used to bring food to the dining level, as well as to return dishes and cutlery for washing.