At best, insider boosters had hoped they might get as far as Denny's Iron Mountain in Snoqualmie Pass. While the SLS&E was designed to connect with one of the other transcontinentals, its primary purpose lay in 19th-century industrial development exploiting the city's hinterland: the fast-disappearing easy timber, then primarily coal and iron. A theory, which later became profitable in fact, was that commuter trains could run along the SLS&E track, and be only twenty scenic minutes away from the center of the city. Ever since, every suburb around the perimeter of the city has been advertised as only twenty scenic minutes away from downtown.