Great Northern Railroad are working on a complete overhaul of the Mark Twain Zephyr at this time. Once restored, the Wisconsin Great Northern Railroad plans to operate the Mark Twain Zephyr on its main railroad line between Trego and Springbrook, Wisconsin. References External links Gateway Rail Services Google Maps satellite view of the train set's current location (April 2010) Flickr gallery showing the state of the train in 1983 A webpage tracking the restoration process Passenger trains of the Chicago, Burlington and Quincy Railroad Articulated passenger trains Railway services introduced in 1935 Budd multiple units Diesel multiple units of the United States Chicago, Burlington and Quincy locomotives