Hey roar.vader to open the doors you first must head inside one of the two cabs, you can access them via the nose doors located adjacent to the cabs on each end or you can noclip inside by toggling the ability by pressing ‘home’ on the keyboard. Once inside turn on the master switch at the top of the cab and then press either the ‘right unlock’ or ‘left unlock’ buttons to unlock the doors. Any issues I can personally help you over discord. Have fun driving

how do you open the doors