6 of the World’s Biggest Vehicles In Air, Land & Water

6. NASA Crawler-Transporter

World’s biggest what? Self-powered tracked vehicle.

Built by: Marion Power Shovel of America.

There are two crawler-transporters used by NASA, and today they carry space shuttles — boosters and all — along with each shuttle’s Mobile Launcher Platform into position. While not as large as the Bagger 288 above, the crawlers are the largest self-powered vehicles in the world, and can manage two miles per hour (compared to the Bagger’s 30-some feet a minute) when unloaded.