Guinness World Records adjudicator Hannah Ortman shakes hands NASA’s Crawler Element Operations Manager John Giles during a ceremony on March 29, 2023, at the agency’s Kennedy Space Center in Florida. Also in the photo is Brett Raulerson, Jacobs TOSC Crawlers, Transporters and Structures group manager. Guinness World Records officially designated NASA’s Crawler Transporter 2 as the heaviest self-powered vehicle, weighing approximately 6.65 million pounds. The crawler is responsible for carrying the Space Launch System rocket and Orion spacecraft for the Artemis missions to and from the launch pad.