This is a fix to avoid that the AI who are not in the group of the driver, left the vehicle while the engine start. For ACE 1.09 only. Installation : - Go in your \ArmA\@ACE\Addons folder and do a backup of the file named "ace_sys_engine.pbo". - Copy the fixed *.pbo to the same location. - Important : do not use that file with the online games, use the backup instead.