Theme/amusement parks are always looking for ways to breathe new life into old roller coasters and ratchet up the thrills. Six Flags Over Georgia announced yesterday that as of March 10, The Great American Scream Machine will run backward for a limited run. This classic wooden coaster has been designated a national landmark and previously ran backward, in 1992. This certainly looks interesting if not insane! Photo and video courtesy of Six Flags Over Georgia.