I have recently ordered an A3 Sportback S line with S tronic, ACC, but not Hold Assist. Thinking of adding Hold Assist but wondering if it is needed when using ACC in traffic. I am assuming that the ACC will bring you to a complete stop in traffic and hold you at a stop until the traffic starts again? Can anyone with S tronic and ACC confirm please? Also, for anyone with ACC and S tronic, how have you found this setup generally in stop start traffic? I have read through this forum, but could not find any posts on this aspect of AAC.