The Martian Excursion Vehicle (MEV) was a Space Vehicle driven by the Zero-X Crew on the surface of Mars in the movie Thunderbirds Are Go. During the Zero-X mission in the year 2067, the MEV landed on the surface of Mars to survey the landscape and collect rock samples to take back to Earth. The mission was aborted when the MEV and crew were attacked by vicious Martian Alien Rock Snakes, which fired blazing and explosive fireballs from all directions. The attack was so intense that the MEV began to overheat, and the crew were even forced to abandon their countdown for rendezvous with the Zero-X main body, and take off ahead of time.