Glacier National Park's fleet of 33 buses have been navigating the "Going To The Sun Road" since the late 1930's. The buses were built by the White Motor Company, and earned the name "Jammers" because the original manual transmissions required the drivers "jam" through the gears, as they climbed the steep road. Automatic transmissions were installed in 1989, and then in 1999-2002, the entire fleet was thoroughly overhauled by Ford Motor Company.They're now fueled by propane.
