In this time-lapse video, taken on Oct. 9, 2019, at NASA’s Jet Propulsion Laboratory in Pasadena, California, bunny-suited engineers move the Mars 2020 rover from a high bay in the Spacecraft Simulator Building into the facility’s large vacuum chamber for testing in Mars-like environmental conditions.
Source:
https://phys.org/news/2019-11-nasa-mars-chamber.html