Adjustment of Status - I-485

We'e just had my wife's interview today. late forty years old officer interviewed us. he was friendly. interview lasted for 15 minutes. he checked all info in applications. ask my wife the yes/no questions. verified her information full name, father and mother names and place of birth, addresses we lived in before, her work history.He just asked me one question about my work place and my title. at the end he told us everything was clear and you will receive the gc within 30 days. He never asked us to see any evidence except for our IDs when we get there. 10 minutes after leaving his office; we received the updates that the card is in production.