Great! That was an American-style oath ceremony, almost like a drive-through experience, with three queues of cars driving towards the officer and stepping outside only to take the actual oath.
It seems our field office is a bit slow. From the experiences of other people, they usually get their interviews within 3-4 months nowadays. It took me about 6 months to get an interview, and it was a worrying experience. I'm glad that it's over. I applied for the passport on the same day, and I hope it won't take another half a year to receive it Congratulations to you too!