AdvertisementWho Will Shuttle The Last Shuttle? The Crawler CrewMay 31, 2011Nell GreenfieldboycefacebookEmailFramed in the doors of the Kennedy Center's Vehicle Assembly Building, the crawler begins the long journey toward Launch Pad 37B with space shuttle Discovery in April 2005. This enormous cross between a tank and a cargo ship is the largest self-powered land vehicle in the world. (NASA)